Public bug reported: https://github.com/CanonicalLtd/netplan/blob/ea47bd4e1c5319b1a624ea61c843ee96e7c128da/src/networkd.c#L208
The separator used to add multiple ARP IP targets for the networkd renderer is ",". Unfortunately, networkd doesn't allow that, but rather expects whitespace: (in config_parse_arp_ip_target_address():) [...] for (;;) { [...] r = extract_first_word(&rvalue, &n, NULL, 0); extract_first_word's third parameter is const char *separators; where NULL is handled like so (src/basic/extract-word.c:37): if (!separators) separators = WHITESPACE; Finally: src/basic/string-util.h:#define WHITESPACE " \t\n\r" So; it doesn't handle commas for the list, just whitespace; so let's give it whitespace please :) ** Affects: netplan Importance: Undecided Status: New ** Affects: netplan.io (Ubuntu) Importance: Undecided Status: New ** Also affects: netplan Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1829264 Title: incorrect separator for multiple ARP IP targets To manage notifications about this bug go to: https://bugs.launchpad.net/netplan/+bug/1829264/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs