On Wednesday, 22 December 2021 18:53:57 AEDT Andrew Pam wrote:
> On 22/12/21 6:48 pm, Russell Coker via luv-main wrote:
> > When pppd starts I have a script in /etc/ppp/ip-up.d that among other
> > things restarts the wide dhcpv6 client. That hangs with the above in the
> > process list, the time I noticed this was 18:34 so for 4 minutes it had
> > been hung. When I ran "/etc/init.d/wide-dhcpv6-client restart" from a
> > regular root xterm it restarted the daemon and caused the other systemctl
> > session to exit with error code 0 and the rest of the script completed.
> >
> > Any idea why it hung and how I can make it not hang in future?
>
> On my router it doesn't hang, but it exits without actually starting the
> DHCPv6 client. I always have to manually restart it after bringing up pppd.
root@xev:/etc/ppp/ip-up.d# cat ipv6
#!/bin/bash
set -e
/etc/init.d/wide-dhcpv6-client restart
sleep 10
/sbin/ip -6 route add default dev ppp0
sleep 10
/usr/local/sbin/restart-radvd
/usr/local/sbin/update-dns
root@xev:/etc/ppp/ip-up.d# cat /usr/local/sbin/restart-radvd
#!/bin/bash
set -e
PREF=$(/sbin/ifconfig br0|grep inet6.*global|sed -e s/^.*inet6.//|cut -
f1,2,3,4 -d:)
CONF=/etc/radvd.conf
sed -e "s/prefix.*::/prefix $PREF::/" < $CONF > $CONF.new
mv $CONF.new $CONF
/sbin/restorecon $CONF
/etc/init.d/radvd restart
root@xev:/etc/ppp/ip-up.d# cat /usr/local/sbin/update-dns
#!/bin/bash
set -e
IPV6=$(ip addr list|grep inet6.*global|sed -e s/^.*inet6.// -e "s/\/.*$//")
if [ "$IPV6" == "" ]; then
echo "No IPv6 address"
exit 1
fi
ssh -T xev@xkcd /home/xev/bin/update-dns $IPV6 > /dev/null
I have the above scripts which do everything automatically except that it
hangs on the wide-dhcpv6-client. I need this to work as my NBN connection
goes down every few weeks and I don't want to lose IPv6 or have to get
manually involved.
For the update-dns script most of the workstations I run have NAT for the IPv4
address so I ssh to a server and run the dynamic DNS update from there with
the source address of the SSH connection as the public address. Even though I
have no NAT on this system I use the same script because it's easier to have
lots of things run the same way.
--
My Main Blog http://etbe.coker.com.au/
My Documents Bloghttp://doc.coker.com.au/
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