dhcpcd-discuss

On Sat, Aug 1, 2020, at 11:28, Roy Marples wrote:
> Hi Lucas
> 
> On 01/08/2020 16:42, Lucas Raab wrote:
> > Hello,
> > 
> > I'm receiving this error after upgrading from dhcpcd 9.0.2 to 9.1.4
> > on OpenBSD-current. The result of which is that I no longer receive
> > IPv6 addresses on any interfaces.
> > 
> > dhcpcd_fork_cb truncated read 0 (expected 4)
> > ps_ctl_listen: read: Undefined error: 0
> 
> Eek!
> Looks like dhcpcd crashed :/
> Is there any clue in dmesg?
> 

D'oh! Should have checked there before emailing!:

dhcpcd[74383]: pledge "getpw", syscall 33

> Can you run in through `ktrace -d` and then email me off list the kdump output 
> please?

Attached

> 
> > 
> > em0 is my external interface and em1 assigned to be the internal
> > interface. I am using dhcpcd for IPv6-PD with rad providing a /64
> > to my internal LAN.
> > 
> > /etc/dhcpcd.conf:
> > debug
> >                                                                                 
> > allowinterfaces em0
> >                                                                                 
> > # Allow users of this group to interact with dhcpcd via the control socket.
> > controlgroup wheel
> >                                                                                 
> > # Inform the DHCP server of our hostname for DDNS.
> > hostname
> >                                                                                 
> > # Use the hardware address of the interface for the Client ID.
> > #clientid
> > # or
> > # Use the same DUID + IAID as set in DHCPv6 for DHCPv4 ClientID as per RFC4361.
> > # Some non-RFC compliant DHCP servers do not reply with this set.
> > # In this case, comment out duid and enable clientid above.
> > duid
> > 
> > # Persist interface configuration when dhcpcd exits.
> > persistent
> > 
> > # Rapid commit support.
> > # Safe to enable by default because it requires the equivalent option set
> > # on the server to actually work.
> > option rapid_commit
> > 
> > # A list of options to request from the DHCP server.
> > option domain_name_servers, domain_name, domain_search, host_name
> > option classless_static_routes
> > # Respect the network MTU. This is applied to DHCP routes.
> > option interface_mtu
> > 
> > # Most distributions have NTP support.
> > #option ntp_servers
> > 
> > # A ServerID is required by RFC2131.
> > require dhcp_server_identifier
> > 
> > # Generate SLAAC address using the Hardware Address of the interface
> > #slaac hwaddr
> > # OR generate Stable Private IPv6 Addresses based from the DUID
> > slaac private
> > 
> > ipv6only
> > script ""
> > 
> > interface em0
> >          ia_na 0
> >          ia_pd 1 em0/1 em1/2
> > 
> > Using the default configuration file does yield an IPv6 address on
> > em0. Looking at the differences between mine and the default,
> > the PD config is the only obvious one.
> > 
> > Let me know if additional information to properly troubleshoot is
> > required
> 
> I'll try this on my OpenBSD-6.2 when I get the chance to see if I can 
> re-produce it.
> 
> Are you passing any paramters to launch dhcpcd with from rc.conf?
> 

$ rcctl get dhcpcd
dhcpcd_class=daemon
dhcpcd_flags=-Mq
dhcpcd_rtable=0
dhcpcd_timeout=30
dhcpcd_user=root

> Roy
>

Attachment: ktrace.out
Description: Binary data