225997 – net-misc/dhcpcd-4.0.0_beta5 ignores dhcp option 26 (mtu)

Bug 225997 - net-misc/dhcpcd-4.0.0_beta5 ignores dhcp option 26 (mtu)

Summary: net-misc/dhcpcd-4.0.0_beta5 ignores dhcp option 26 (mtu)

Status:	RESOLVED FIXED

Alias:	None

Product:	Gentoo Linux
Classification:	Unclassified
Component:	New packages (show other bugs)
Hardware:	x86 Linux

Importance:	High normal (vote)
Assignee:	Gentoo's Team for Core System packages

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Depends on:
Blocks:

Reported:	2008-06-11 23:51 UTC by Markus Lohse
Modified:	2008-06-27 19:29 UTC (History)
CC List:	1 user (show)

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Runtime testing required:	---

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Description Markus Lohse 2008-06-11 23:51:02 UTC

I've configured dnsmasq running on my home-router to send a dhcp-option packet like this:
dhcp-option-force=26,1492

This is supposed to set the client's mtu to 1492 as described here:
http://www.networksorcery.com/enp/protocol/bootp/option026.htm

It just works great with dhcpcd-3.2.3. However dhcpcd-4.0.0_beta5 seems to ignore it as the mtu is always set to 1500 (ip address and routes are ok).



Reproducible: Always

Steps to Reproduce:
1.upgrade to dhcpcd-4.0.0_beta5

Actual Results:  
dhcpcd does no longer set the correct mtu size -> default size 1500

Expected Results:  
network interface should have the mtu size set to 1492

dhcp-server: net-dns/dnsmasq-2.41

Comment 1 Roy Marples 2008-06-13 10:12:28 UTC

dhcpcd-4.0.0_beta6 (when it comes out) will support MTU again.
If you want, you can test a snapshot by downloading one from my git repo.
http://git.marples.name/?p=dhcpcd/.git;a=snapshot;h=083435556f14a071e66007efed5cd588349bdb2e;sf=tgz

Comment 2 Roy Marples 2008-06-19 08:44:23 UTC

beta6 is out, this can be closed.

Comment 3 Markus Lohse 2008-06-27 19:29:36 UTC

Everything works fine again with dhcpcd-4.0.0_beta7. Thanks :)