Re: dhclient and ipv6 DNS Servers
Am Mittwoch, 15. Januar 2020, 00:09:16 CET schrieb Pascal Hambourg:
> Le 14/01/2020 à 21:14, Rainer Dorsch a écrit :
> > prepend dhcp6.name-servers 2001:4860:4860::8888, 2001:4860:4860::8844;
> >
> > avoids the error message, but has no visible effect I can see. The IPv6
> > DNS
> > servers still do not show in resolv.conf.
>
> You may receive IPv6 DNS information from IPv6 Router Advertisements
> (RA) with rdnssd, not DHCPv6.
Many thanks, Pascal, that explains the obervations :-)
I have in /etc/network/interfaces
iface eth0.1 inet6 auto
dhcp 1
request_prefix 1
I could not find a way to overwrite the DNS server for rdnssd, does anybody
know if that is possible?
According to the interfaces man page, dhclient should be responsible with the
dhcp method
iface eth0.1 inet6 dhcp
request_prefix 1
ifup shows the nameservers in the log
Thu Jan 16 23:15:13 CET 2020: entering /etc/dhcp/dhclient-enter-hooks.d,
dumping variables.
reason='PREINIT'
interface='eth0.1'
--------------------------
Thu Jan 16 23:15:13 CET 2020: entering /etc/dhcp/dhclient-exit-hooks.d,
dumping variables.
reason='PREINIT'
interface='eth0.1'
--------------------------
Thu Jan 16 23:15:14 CET 2020: entering /etc/dhcp/dhclient-enter-hooks.d,
dumping variables.
reason='REBOOT'
interface='eth0.1'
new_ip_address='192.168.0.30'
new_network_number='192.168.0.0'
new_subnet_mask='255.255.255.0'
new_broadcast_address='192.168.0.255'
new_routers='192.168.0.1'
new_domain_name='bokomoko.de'
new_domain_name_servers='192.168.0.1'
new_ntp_servers='192.168.0.1'
new_dhcp6_name_servers='2001:4860:4860::8888 2001:4860:4860::8844'
--------------------------
Thu Jan 16 23:15:14 CET 2020: entering /etc/dhcp/dhclient-exit-hooks.d,
dumping variables.
reason='REBOOT'
interface='eth0.1'
new_ip_address='192.168.0.30'
new_network_number='192.168.0.0'
new_subnet_mask='255.255.255.0'
new_broadcast_address='192.168.0.255'
new_routers='192.168.0.1'
new_domain_name='bokomoko.de'
new_domain_name_servers='192.168.0.1'
new_ntp_servers='192.168.0.1'
new_dhcp6_name_servers='2001:4860:4860::8888 2001:4860:4860::8844'
--------------------------
Thu Jan 16 23:15:14 CET 2020: entering /etc/dhcp/dhclient-enter-hooks.d,
dumping variables.
reason='PREINIT6'
interface='eth0.1'
--------------------------
Thu Jan 16 23:15:14 CET 2020: entering /etc/dhcp/dhclient-exit-hooks.d,
dumping variables.
reason='PREINIT6'
interface='eth0.1'
--------------------------
but then I do not see an impact on resolv.conf:
nameserver fd38:81d3:9dac::1
nameserver fd22:c2e0:8eb2::1
ifup produces this output
XMT: Forming Solicit, 31050 ms elapsed.
XMT: X-- IA_NA b4:00:32:5c
XMT: | X-- Request renew in +3600
XMT: | X-- Request rebind in +5400
XMT: X-- IA_PD b4:00:32:5c
XMT: | X-- Request renew in +3600
XMT: | X-- Request rebind in +5400
XMT: | X-- Request prefix 2a02:8070:898f:e4fc::/62.
XMT: | | X-- Request preferred in +7200
XMT: | | X-- Request valid in +10800
XMT: Solicit on eth0.1, interval 33560ms.
RCV: Advertise message on eth0.1 from fe80::e228:6dff:fe43:5776.
RCV: X-- Server ID: 00:03:00:01:e0:28:6d:43:57:76
PRC: Lease failed to satisfy.
Any hint is still welcome :-)
Thanks
Rainer
--
Rainer Dorsch
http://bokomoko.de/
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