[Bug 1993105] Re: can't add more than ~1024 IP addresses

[Nick Rosbrook]

This was fixed in v257, which is present in 25.04.

** Changed in: systemd (Ubuntu)
       Status: Triaged => Fix Released

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Title:
  can't add more than ~1024 IP addresses

Status in Netplan:
  Invalid
Status in systemd:
  Unknown
Status in systemd package in Ubuntu:
  Fix Released

Bug description:
  I've migrated from Debian (using /etc/network/interfaces) to Ubuntu
  22.04 (using netplan). To my surprise, it's not possible to add more
  than 1024 IP addresses using netplan.

  It errors in syslog with:

  Oct 17 07:19:50 ktsend11 systemd-networkd[678]: /run/systemd/network/10-netplan-ens192.network:3299: Failed to allocate new address, ignoring assignment: Argument list too long
  Oct 17 07:19:50 ktsend11 systemd-networkd[678]: /run/systemd/network/10-netplan-ens192.network:3300: Failed to allocate new address, ignoring assignment: Argument list too long
  Oct 17 07:19:50 ktsend11 systemd-networkd[678]: /run/systemd/network/10-netplan-ens192.network:3301: Failed to allocate new address, ignoring assignment: Argument list too long
  Oct 17 07:19:50 ktsend11 systemd-networkd[678]: /run/systemd/network/10-netplan-ens192.network:3302: Failed to allocate new address, ignoring assignment: Argument list too long

  
  As a result, only around 1024 IPs are present in the system:

  # ip addr|grep -c inet
  1027

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