Package: debian-installer
Severity: important
# PROBLEM DESCRIPTION
During installation, if automatic netowrk configuration is selected, the
MTU size provided by the DHCP server is not set.
This is crucial if d-i runs in a virtual machine (Proxmox, qemu) which MTU
is set to a lower value than 1500 and thus results in an unaccessible
network connection when d-i tries to contact the repository server. Then,
wget hangs for a really, really long time and returns with an error and no
mirror is used.
Circumventing this issue by manually setting desired MTU after configuring
the network (ip link dev <dev> set mtu <size>) works flawlessly.
Also, there is no possibility to set the MTU size during manual network
configuration.
# STEPS TO REPRODUCE
Run d-i inside a vm (Proxmox, qemu) with a host's MTU size less than 1500.
# EXPECTED BEHAVIOR
The MTU size provided by the DHCP server should be recognized and used to
configure the network.
-- System Information
all
