Re: Finishing deprecation of isc-dhcp-client in ifupdown*
On Tue, 4 Nov 2025, Daniel Gröber wrote:
>I've added more hacks to make this work. See
>https://salsa.debian.org/debian/ifupdown/-/merge_requests/28/diffs?commit_id=acc9455eef698b4d51f08c3dfa87e31bdcc1147e
I did the following:
- check out commit acc9455eef698b4d51f08c3dfa87e31bdcc1147e
- apply the following patch:
diff --git a/debian/changelog b/debian/changelog
index 48b5ce8..dc5bd67 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,4 +1,4 @@
-ifupdown (0.8.45) unstable; urgency=medium
+ifupdown (0.8.45~~exp3) unstable; urgency=medium
[ Kai Tetzlaff ]
* Stop inet (IPv4) stanza from erroniously starting dhcpcd on IPv6
diff --git a/inet.defn b/inet.defn
index 2e277d3..7259085 100644
--- a/inet.defn
+++ b/inet.defn
@@ -121,7 +121,7 @@ method dhcp
ip link set dev %iface% down \
if (iface_is_link())
- dhcpcd.sh --restore-syscltls \
+ dhcpcd.sh --restore-sysctls \
if (execable("dhcpcd") && !execable("dhclient"))
method bootp
- build, install, reboot
- up the interface again
This did not change anything, the IPv6 address was still wrong,
and I still got two link-local addresses, one of which is wrong.
Then I changed /etc/network/interfaces.d/foo to add…
iface foo inet6 auto
(as I use “sudo ifup wlan0=foo” because I switch between different
WLANs all the time), as you suggested I’ve got to migrate to, and
THE RESULT IS ACTUALLY EVEN WORSE:
inet 192.168.0.208/24 brd 192.168.0.255 scope global dynamic noprefixroute wlan0
valid_lft 1209574sec preferred_lft 1058374sec
inet6 2001:470:1f15:10c:7922:456f:9923:7a9e/64 scope global dynamic mngtmpaddr noprefixroute
valid_lft 2591970sec preferred_lft 604770sec
inet6 fe80::d658:47f3:7d84:b5e/64 scope link
valid_lft forever preferred_lft forever
Now I got the same broken global address and ONLY THE BROKEN link-local
address; the correct one (EUI64-based) has gone away.
bye,
//Thorsten
--
Thorsten Glaser
Linux / Unix Developer
Tel.: +49 160 91168501
E-Mail: tglaser@b1-systems.de
B1 Systems GmbH
Osterfeldstraße 7 / 85088 Vohburg / https://www.b1-systems.de/
GF: Ralph Dehner / Unternehmenssitz: Vohburg / AG: Ingolstadt, HRB 3537
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