Running dhcpcd-7.0.1p1 on my X230 with a March 2nd snapshot to configure DNS via stateless DHCPv6. When roaming between networks or simply taking the egress interface down and up again, dhcpcd dumps core.
# rcctl get dhcpcd flags trunk0 # cat /etc/dhcpcd.conf background ipv6only ipv6ra_fork ipv6ra_noautoconf option domain_name domain_name_servers domain_search require domain_name_servers Reproducible as follows: # ifconfig trunk0 down up # does *not* trigger it # rcctl check dhcpcd dhcpcd(ok) # ifconfig trunk0 down ; ifconfig trunk0 up # rcctl check dhcpcd dhcpcd(failed) Full backtrace with debug symbols: # egdb -se `which dhcpcd` -c /dhcpcd.core -batch -ex bt [New process 524139] Core was generated by `dhcpcd'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x000016ed6ec279ec in dhcp6_handleifa (cmd=12, ia=0x16f0076c5800) at dhcp6.c:3886 3886 ifp->options->options & DHCPCD_DHCP6 && #0 0x000016ed6ec279ec in dhcp6_handleifa (cmd=12, ia=0x16f0076c5800) at dhcp6.c:3886 #1 0x000016ed6ec21a1a in ipv6_handleifa (ctx=<optimized out>, cmd=12, ifs=<optimized out>, ifname=<optimized out>, addr=<optimized out>, prefix_len=<optimized out>, addrflags=<optimized out>) at ipv6.c:1178 #2 0x000016ed6ec07f82 in if_learnaddrs (ctx=0x7f7ffffdbba0, ifs=0x16f05fcefb40, ifaddrs=0x7f7ffffdb7c0) at if.c:259 #3 0x000016ed6ec03185 in dhcpcd_handleinterface (arg=0x7f7ffffdbba0, action=0, ifname=<optimized out>) at dhcpcd.c:1030 #4 0x000016ed6ec02d4c in dhcpcd_handlecarrier (ctx=0x7f7ffffdbba0, carrier=<optimized out>, flags=34818, ifname=<optimized out>) at dhcpcd.c:739 #5 0x000016ed6ec157fc in if_ifinfo (ctx=<optimized out>, ifm=<optimized out>) at if-bsd.c:965 #6 if_dispatch (rtm=<optimized out>, ctx=<optimized out>) at if-bsd.c:1195 #7 if_handlelink (ctx=0x7f7ffffdbba0) at if-bsd.c:1225 #8 0x000016ed6ec05a6f in dhcpcd_handlelink (arg=0x7f7ffffdbba0) at dhcpcd.c:964 #9 0x000016ed6ec06ecc in eloop_start (eloop=0x16f030530200, signals=<optimized out>) at eloop.c:963 #10 0x000016ed6ec0563f in main (argc=<optimized out>, argv=0x7f7ffffdbf48) at dhcpcd.c:1924 Can anybody reproduce this? Below is my APU2's configurtation running wide-dhcpv6-20080615p8 with a snapshot from March 6th: apu# cat /etc/dhcp6s.conf option domain-name-servers fd00::1; apu# cat /etc/rtadvd.conf default:\ :mininterval#3:maxinterval#4:\ :vltime#86400:\ :rdnss="fd00::1":\ :raflags=0x40: