This is an issue in 4.2, not sure about how 4.3+ currently handle this call path.
rx_add_framed_ip_avp() is called with an IP formatted as "[2001:db8::ff00:42:8329]"
This passes the INET6_ADDRSTRLEN check due to '::' compression, but inet_pton will fail to parse.

One possible hack/fix is:
check for leading/trailing '[]' for V6 addrs and strip them prior to calling inet_pton

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