===== uname =====
DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026     root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64
===== DF-3309: IPV6_MULTICAST_LOOP echoes defmcasthlim =====
net.inet6.ip6.defmcasthlim: 1
net.inet6.ip6.defmcasthlim: 1 -> 5
IPV6_MULTICAST_LOOP = 5 (l=4)
exit=2 (2 == bug reproduced)
net.inet6.ip6.defmcasthlim: 5 -> 1
IPV6_MULTICAST_LOOP = 1 (l=4)
exit=0 with default sysctl
===== DF-3391: ipfw3 IP_FW_X error swallowed =====