Hello, a notification to inform about a regression to the AVPs with the integer IDs that was introduced in the v5.4.5 release when trying to fix an issue reported from a static code analyzer/fuzzer. The workaround is to use string names for AVPs, so if you have AVPs like $avp(i:123), they can be changed to $avp(s:123) in the kamailio.cfg (ie., replace i: with s: ). Regression is already fixed in the git branch 5.4, so if you install it from there, all should be ok. For Debian packages, you can wait till tomorrow and use the nightly builds of 5.4.x series from the repos listed at:   * http://deb.kamailio.org/#dev54 Cheers, Daniel -- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio Advanced Training - Online May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone) * https://www.asipto.com/sw/kamailio-advanced-training-online/