[sr-dev] [kamailio/kamailio] Memory leak in dns_cache.c / dns_cache_mk_rd_entry (Issue #3523)

### Description

We have some Kamailio servers running as an outboundproxy. Requests go to different domains. Over the time, there is a slow but steady shared memory increase. We don't see the behavior on our Kamailio servers serving as endpoint proxies using the same code.

I did a memory dump, and on two systems I inspected, I saw the same result: A really high memory usage for the `dns_cache_mk_rd_entry` function. <!-- Explain what you did, what you expected to happen, and what actually happened. -->

### Troubleshooting

#### Reproduction

When we restart our Kamailio, it starts off with just a few megabytes of shared mem used. After running for a month or two, this has increased to some hundred megabytes used. <!-- If the issue can be reproduced, describe how it can be done. -->

#### Debugging Data

This is the output of the shm dump:

``` Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): summarizing all alloc'ed. fragments: Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 592 bytes from tm: t_reply.c: _reply_light(500) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 45 size= 43576 bytes from core: core/msg_translator.c: build_req_buf_from_sip_req(2233) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 44 size= 33232 bytes from tm: t_reply.c: relay_reply(2061) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 45 size= 376840 bytes from tm: h_table.c: build_cell(334) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 4 size= 224 bytes from pike: ip_tree.c: new_ip_node(201) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 45 size= 275304 bytes from core: core/sip_msg_clone.c: sip_msg_shm_clone(495) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 16 size= 1528 bytes from core: core/usr_avp.c: create_avp(176) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 45 size= 16728 bytes from core: core/sip_msg_clone.c: msg_lump_cloner(973) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 12 size= 488 bytes from tls: tls_ct_q.h: tls_ct_q_add(58) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 12 size= 584 bytes from tls: tls_server.c: tls_complete_init(276) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 59 size= 3776 bytes from rtpengine: ../../core/parser/../ut.h: shm_str_dup(859) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 212 size= 15720 bytes from core: core/xavp.c: xavp_new_value(116) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 59 size= 3888 bytes from rtpengine: rtpengine.c: rtpp_function_call(2775) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 29 size= 2680 bytes from core: core/dns_cache.c: dns_cache_mk_bad_entry(770) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count=856568 size= 311761008 bytes from core: core/dns_cache.c: dns_cache_mk_rd_entry(1117) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 13941 size= 2741784 bytes from htable: ht_api.c: ht_cell_new(186) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 2 size= 104 bytes from xhttp_prom: prom_metric.c: prom_metric_lvalue_create(513) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 24 size= 3752 bytes from tmx: tmx_pretran.c: tmx_check_pretran(250) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 24 size= 6776 bytes from tmx: tmx_pretran.c: tmx_check_pretran(271) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 553 size= 10177808 bytes from core: core/tcp_main.c: tcpconn_new(1175) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 53760 bytes from core: core/counters.c: counters_prefork_init(212) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 2 size= 976 bytes from tls: tls_domain.c: ksr_tls_fix_domain(1057) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8064 bytes from sl: sl_stats.c: init_sl_stats_child(125) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 512 bytes from tmx: tmx_pretran.c: tmx_init_pretran_table(90) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 10752 bytes from tm: t_stats.c: init_tm_stats_child(56) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 2016 bytes from kex: pkg_stats.c: pkg_proc_stats_init(78) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 8 size= 176 bytes from core: core/cfg/cfg_struct.c: cfg_clone_str(130) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 992 bytes from core: core/cfg/cfg_struct.c: cfg_shmize(217) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: main.c: main_loop(1334) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/pt.c: init_pt(107) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/pt.c: init_pt(106) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 6216 bytes from core: core/pt.c: init_pt(105) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from app_python3: apy_kemi.c: apy_sr_init_mod(2095) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from app_python3: apy_kemi.c: apy_sr_init_mod(2088) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from xhttp_prom: prom_metric.c: prom_metric_init(219) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 16 bytes from pike: pike.c: pike_init(127) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 1040 bytes from pike: ../../core/lock_alloc.h: lock_set_alloc(66) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 4112 bytes from pike: ip_tree.c: init_ip_tree(115) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from pike: pike.c: pike_init(109) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 4 size= 120 bytes from core: core/cfg_parser.c: cfg_parse_str(907) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 2 size= 448 bytes from tls: tls_domain.c: tls_new_domain(187) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 48 bytes from tls: tls_domain.c: tls_new_cfg(1553) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from tls: tls_ct_wrq.c: tls_ct_wq_init(49) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from tls: tls_mod.c: mod_init(373) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from tls: tls_mod.c: mod_init(357) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from siptrace: siptrace.c: mod_init(338) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 256 size= 14336 bytes from rtpengine: rtpengine_hash.c: rtpengine_hash_table_init(111) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 256 size= 2048 bytes from rtpengine: rtpengine_hash.c: rtpengine_hash_table_init(96) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 1024 bytes from rtpengine: rtpengine_hash.c: rtpengine_hash_table_init(85) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 2048 bytes from rtpengine: rtpengine_hash.c: rtpengine_hash_table_init(76) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 2048 bytes from rtpengine: rtpengine_hash.c: rtpengine_hash_table_init(67) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 32 bytes from rtpengine: rtpengine_hash.c: rtpengine_hash_table_init(58) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 24 bytes from rtpengine: rtpengine.c: add_rtpengine_socks(1021) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 64 bytes from rtpengine: rtpengine.c: add_rtpengine_socks(1002) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from rtpengine: rtpengine.c: get_rtpp_set(916) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 56 bytes from rtpengine: rtpengine.c: get_rtpp_set(907) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from rtpengine: rtpengine.c: mod_init(1683) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 24 bytes from rtpengine: rtpengine.c: mod_init(1676) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from rtpengine: rtpengine.c: mod_init(1650) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from rtpengine: rtpengine.c: mod_init(1643) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 16 bytes from rtpengine: rtpengine.c: mod_init(1629) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 5 size= 1581568 bytes from htable: ht_api.c: ht_init_tables(394) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 16 bytes from usrloc: ul_callback.c: init_ulcb_list(44) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 4 size= 288 bytes from core: core/timer.c: register_timer(995) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from sl: sl_funcs.c: sl_startup(90) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from sl: sl_stats.c: init_sl_stats(110) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 16 bytes from tm: t_hooks.c: init_tmcb_lists(71) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 16 bytes from tm: t_hooks.c: init_tmcb_lists(69) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 2097152 bytes from tm: h_table.c: init_hash_table(482) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 16 bytes from tm: rpc_uac.c: tm_rpc_response_list_init(77) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from kex: mod_stats.c: mod_stats_init_rpc(294) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 4 size= 128 bytes from core: core/cfg/cfg_ctx.c: cfg_register_ctx(47) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1089 size= 82016 bytes from tls: tls_init.c: ser_realloc(299) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8192 bytes from core: core/tcp_main.c: init_tcp(5051) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 32768 bytes from core: core/tcp_main.c: init_tcp(5046) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/tcp_main.c: init_tcp(5037) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/tcp_main.c: init_tcp(5030) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/tcp_main.c: init_tcp(5023) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/tcp_main.c: init_tcp(5017) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/tcp_main.c: init_tcp(5005) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/usr_avp.c: init_avps(90) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/usr_avp.c: init_avps(89) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 16384 bytes from core: core/dst_blocklist.c: init_dst_blocklist(437) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/dst_blocklist.c: init_dst_blocklist(430) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 2 size= 96 bytes from core: core/timer.c: timer_alloc(498) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/dns_cache.c: init_dns_cache(368) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 16384 bytes from core: core/dns_cache.c: init_dns_cache(359) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 16 bytes from core: core/dns_cache.c: init_dns_cache(351) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/dns_cache.c: init_dns_cache(343) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/timer.c: init_timer(267) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 16384 bytes from core: core/timer.c: init_timer(266) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/timer.c: init_timer(265) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/timer.c: init_timer(264) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/timer.c: init_timer(253) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/timer.c: init_timer(221) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 278544 bytes from core: core/timer.c: init_timer(210) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/timer.c: init_timer(209) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/timer.c: init_timer(197) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 64 bytes from core: core/cfg/cfg_struct.c: cfg_child_cb_new(829) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/cfg/cfg_struct.c: sr_cfg_init(361) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/cfg/cfg_struct.c: sr_cfg_init(354) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/cfg/cfg_struct.c: sr_cfg_init(347) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/cfg/cfg_struct.c: sr_cfg_init(335) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/cfg/cfg_struct.c: sr_cfg_init(323) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/sr_module.c: ksr_shutdown_phase_init(124) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 36864 bytes from core: core/kemi.c: sr_kemi_cbname_list_init(3605) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/kemi.c: sr_kemi_cbname_list_init(3596) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/kemi.c: sr_kemi_cbname_list_init(3586) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 3 size= 72 bytes from xhttp_prom: ../../core/ut.h: shm_str_dup(859) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 5 size= 96 bytes from xhttp_prom: prom_metric.c: prom_lb_node_add(813) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 5 size= 120 bytes from xhttp_prom: prom_metric.c: prom_lb_node_add(791) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 3 size= 48 bytes from xhttp_prom: prom_metric.c: prom_lb_create(873) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 3 size= 168 bytes from xhttp_prom: prom_metric.c: prom_counter_create(978) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 9 size= 128 bytes from pv: pv_shv.c: set_shvar_value(243) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 40 size= 472 bytes from pv: pv_shv.c: add_shvar(177) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 40 size= 2608 bytes from pv: pv_shv.c: add_shvar(170) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 80 bytes from pv: ../../core/lock_alloc.h: lock_set_alloc(66) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 5 size= 1600 bytes from htable: ht_api.c: ht_add_table(289) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 10464 size= 1453800 bytes from tls: tls_init.c: ser_malloc(293) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): count= 1 size= 8 bytes from core: core/mem/q_malloc.c: qm_shm_lock_init(1277) Jul 25 15:08:52 sipproxy /usr/sbin/kamailio[122]: NOTICE: qm_sums: qm_sums(): ----------------------------- ``` ### Additional Information

* **Kamailio Version** - output of `kamailio -v`

``` version: kamailio 5.6.4 (x86_64/linux) flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLOCKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: unknown compiled with gcc 9.4.0 ```

* **DNS related kamailio.cfg Settings**

``` dns_retr_time=3 dns_retr_no=3 dns_use_search_list=no dns_try_naptr=yes use_dns_failover=yes ```

* **Operating System**:

<!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `lsb_release -a` and `uname -a`) -->

``` Podman container with Ubuntu Focal. ```