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:
