Re: [SR-Users] kamailio 4.4.4 fills IPv6 contact address when sending packet over IPv4

Are you sure Linphone is not setting it? Get a trace from client side, for some reason I’ve my doubts kamailio is defaulting to an ipv6 address. On Thu, Jul 11, 2019 at 11:42 PM Pali Rohár &lt;pali.rohar(a)gmail.com&gt; wrote: > Hi! > > I have not set pua_reginfo parameter. Should I set it? And if yes to > which value? There should be at least settings for packets outgoing via > IPv4 and another setting for packets outgoing via IPv6. > > On Thursday 11 July 2019 06:46:35 YASIN CANER wrote: > > Hello, > > > > did you try to set parameter server address? > > > http://kamailio.org/docs/modules/5.2.x/modules/pua_reginfo.html#idm10315047… > > pua_reginfo Module - kamailio.org< > http://kamailio.org/docs/modules/5.2.x/modules/pua_reginfo.html#idm10315047… > > > > Keeping different Servers in Sync regarding the location database Get > notified, when a user registers: A presence-server, which handles offline > message storage for an account, would get notified, when the user comes > online. > > kamailio.org > > > > > > Yasin CANER > > > > ________________________________ > > From: sr-users &lt;sr-users-bounces(a)lists.kamailio.org&gt; on behalf of Pali > Rohár &lt;pali.rohar(a)gmail.com&gt; > > Sent: Wednesday, July 10, 2019 9:29 PM > > To: sr-users(a)lists.kamailio.org > > Subject: Re: [SR-Users] kamailio 4.4.4 fills IPv6 contact address when > sending packet over IPv4 > > > > Hi! Do you have any idea why Kamailio fills incorrect address into > > Contact header? And how to avoid it? > > > > On Sunday 30 June 2019 23:11:22 Pali Rohár wrote: > > > Hi! > > > > > > I detected strange problem that sip.linphone.org refuse to accept > > > presence information re-transmitted by kamailio 4.4.4 server. > > > > > > I debug this problem with tcpdump and I found out that problem is in > > > kamailio which fills IPv6 address into UDP datagram and that datagram > is > > > sent via IPv4 socket to IPv4 address, to sip.linphone.org server. And > > > sip.linphone.org server does not have IPv6 connectivity, so correctly > > > return over IPv4 to sender just "400 Bad Contact Header" error. > > > > > > On my server is running kamailio 4.4.4 from Debian Stretch and I can > > > 100% reproduce this problem against public sip.linphone.org server. > > > > > > My server has both IPv4 and IPv6 connectivity and kamailio is listening > > > for both IPv4 and IPv6 connections. > > > > > > So why is kamailio sending IPv6 address over IPv4 and therefore makes > it > > > impossible to communicate with non-IPv6 enabled servers? Looks like a > > > problem with choosing default/correct socket for Contact header. > > > > > > And how to fix this problem? Can you help me? I would like to have > > > working interconnection with linphone servers. > > > > > > Just to note I'm seeing this problem only for presence information > > > packets. Other requests, like INVITE or MESSAGE seems to work. > > > > > > Below is relevant tcpdump output. Some parts were replaced by {VAR}. > > > > > > PS: I'm not subscribed to list, so please CC my address when sending > > > reply. Thank you! > > > > > > > > > 17:22:58.121719 IP (tos 0x10, ttl 64, id 21629, offset 0, flags > [none], proto UDP (17), length 1266) > > > {MY_IPV4_ADDRESS}.5060 > 91.121.209.194.5060: [bad udp cksum > 0xa099 -> 0x9825!] SIP, length: 1238 > > > NOTIFY sip:{REMOTE_NAME}@{REMOTE_USER_IPV4_ADDRESS}:5060;registering_acc=sip_linphone_org > SIP/2.0 > > > Via: SIP/2.0/UDP > {MY_IPV4_ADDRESS};branch=z9hG4bK2b55.88f93c20000000000000000000000000.0 > > > To: <sip:{REMOTE_NAME}@sip.linphone.org>;tag=75559182 > > > From: > <sip:{MY_SIP_URI}>;tag=97d8e785fdf42bf9622a64c13c504961-2708 > > > CSeq: 2 NOTIFY > > > Call-ID: 26cf9d5c019af2dc3302b770887bcc2e@0:0:0:0:0:0:0:0 > > > Route: <sip:91.121.209.194:5060;lr> > > > Content-Length: 597 > > > User-Agent: kamailio (4.4.4 (x86_64/linux)) > > > Max-Forwards: 70 > > > Event: presence > > > Contact: <sip:{MY_IPV6_ADDRESS}:5060;transport=udp> > > > Subscription-State: active;expires=3600 > > > Content-Type: application/pidf+xml > > > > > > <?xml version="1.0" encoding="UTF-8"?> > > > <presence xmlns="urn:ietf:params:xml:ns:pidf" > xmlns:dm="urn:ietf:params:xml:ns:pidf:data-model" > xmlns:rpid="urn:ietf:params:xml:ns:pidf:rpid" entity="Pali > &lt;sip:{MY_SIP_URI}&gt;"> > > > <tuple id="sg89ae"> > > > <status><basic>open</basic></status> > > > <contact priority="0.8">Pali &lt;sip:{MY_SIP_URI}&gt;</contact> > > > </tuple> > > > > > > <tuple xmlns="urn:ietf:params:xml:ns:pidf" id="TA0C538B2"> > > > <status> > > > <basic>closed</basic> > > > </status> > > > <contact priority="1">sip:{MY_SIP_URI}</contact> > > > <timestamp>2019-04-19T17:20:36+02:00</timestamp> > > > </tuple> > > > </presence> > > > > > > 17:22:58.151188 IP (tos 0x0, ttl 52, id 22949, offset 0, flags [none], > proto UDP (17), length 373) > > > 91.121.209.194.5060 > {MY_IPV4_ADDRESS}.5060: [udp sum ok] SIP, > length: 345 > > > SIP/2.0 400 Bad Contact Header > > > Via: SIP/2.0/UDP > {MY_IPV4_ADDRESS};branch=z9hG4bK2b55.88f93c20000000000000000000000000.0;rport=5060 > > > From: > <sip:{MY_SIP_URI}>;tag=97d8e785fdf42bf9622a64c13c504961-2708 > > > To: <sip:{REMOTE_NAME}@sip.linphone.org>;tag=75559182 > > > Call-ID: 26cf9d5c019af2dc3302b770887bcc2e@0:0:0:0:0:0:0:0 > > > CSeq: 2 NOTIFY > > > Content-Length: 0 > > > > > > > > -- > Pali Rohár > pali.rohar(a)gmail.com > > _______________________________________________ > Kamailio (SER) - Users Mailing List > sr-users(a)lists.kamailio.org > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users >