Symbol: IPTUN_FIXED_MTU
usr/src/uts/common/inet/iptun/iptun.c
2034
if (iptun->iptun_flags & IPTUN_FIXED_MTU)
usr/src/uts/common/inet/iptun/iptun.c
365
iptun->iptun_flags |= IPTUN_FIXED_MTU;