Bug 34912 - Invalid MTU 4000 requested, hw max 1500
Summary: Invalid MTU 4000 requested, hw max 1500
Status: CLOSED NOTABUG
Alias: None
Product: Branch p8
Classification: Distributions
Component: kernel-image-std-def (show other bugs)
Version: не указана
Hardware: x86_64 Linux
: P3 normal
Assignee: Andrey Cherepanov
QA Contact: qa-p8@altlinux.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-05-16 09:01 MSK by Aleksandr
Modified: 2018-12-06 11:14 MSK (History)
1 user (show)

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Description Aleksandr 2018-05-16 09:01:42 MSK 
Integrated network card: 2xGigabitEthernet (Intel 82573L, Intel 82573E).
An error occurred while changing the MTU parameter for the first interface enp13s0 (Intel 82573E).
The second interface enp15s0 (Intel 82573L) configure MTU without problems.
The error stably repeats on the version: 4.9.71 (4.9.71-std-def-alt0.M80P.1), 4.16.7 (4.16.7-un-def-alt1).

cat /etc/net/ifaces/enp13s0/iplink
mtu 4000

cat /etc/net/ifaces/enp15s0/iplink
mtu 4000

dmesg
[   20.500086] enp13s0: Invalid MTU 4000 requested, hw max 1500
[   20.952947] enp15s0: changing MTU from 1500 to 4000

ifconfig
enp13s0   Link encap:Ethernet  HWaddr 00:30:48:BA:9D:38
          inet addr:172.16.0.236  Bcast:172.16.0.255  Mask:255.255.255.0
          inet6 addr: fe80::230:48ff:feba:9d38/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

enp15s0   Link encap:Ethernet  HWaddr 00:30:48:BA:9D:39
          inet addr:192.168.10.236  Bcast:192.168.10.255  Mask:255.255.255.0
          inet6 addr: fe80::230:48ff:feba:9d39/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:4000  Metric:1
Comment 1 Sergey Y. Afonin 2018-12-06 11:14:56 MSK 
- Adapters based on the Intel(R) 82542 and 82573V/E controller do not 
    support Jumbo Frames. These correspond to the following product names:
     Intel(R) PRO/1000 Gigabit Server Adapter
     Intel(R) PRO/1000 PM Network Connection