On my box with Debian testing, I see a new problem with suspend/resume of wired
network device.
Using stock Debian kernel 4.18.0-2-amd64
After suspend/resume cycle, IP address is lost.
Device Info:
$ /sbin/ethtool -i enp12s0
driver: igb
version: 5.4.0-k
firmware-version: 0. 6-1
expansion-rom-version:
bus-info: 0000:0c:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes
$ lspci -v -s 0000:0c:00.0
0c:00.0 Ethernet controller: Intel Corporation I211 Gigabit Network Connection
(rev 03)
Subsystem: Gigabyte Technology Co., Ltd I211 Gigabit Network Connection
Flags: bus master, fast devsel, latency 0, IRQ 17, NUMA node 0
Memory at dfb00000 (32-bit, non-prefetchable) [size=128K]
I/O ports at c000 [size=32]
Memory at dfb20000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: igb
Kernel modules: igb
State before suspend:
$ ip addr show dev enp12s0
4: enp12s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group
default qlen 1000
link/ether 1c:1b:0d:0a:4b:0e brd ff:ff:ff:ff:ff:ff
inet 192.168.1.18/24 brd 192.168.1.255 scope global enp12s0
valid_lft forever preferred_lft forever
State after resume:
$ ip addr show dev enp12s0
4: enp12s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group
default qlen 1000
link/ether 1c:1b:0d:0a:4b:0e brd ff:ff:ff:ff:ff:f
Doing ifdown/ifup which restarts the DHCP client does restore the address.
Not sure if this is a kernel issue with carrier handling, Intel driver issue,
or DHCP client issue.
