Looks like changes to SCTP events create kernel ABI breakage in applications. If application is compiled with new header but attempts to run on older kernel, it doesn't work: Reported here: https://osmocom.org/issues/5366 Looks like bad design assumptions about how setsockopt here: static int sctp_setsockopt_events(struct sock *sk, __u8 *sn_type, unsigned int optlen) { struct sctp_sock *sp = sctp_sk(sk); struct sctp_association *asoc; int i; if (optlen > sizeof(struct sctp_event_subscribe)) return -EINVAL; Because of that the commits that add new events cause code built with the new header to not run on older kernels.
