From dd87ad8e193092f053ca702b303b25d2001bf96d Mon Sep 17 00:00:00 2001 From: Yu Watanabe Date: Wed, 31 Jul 2024 07:21:09 +0900 Subject: [PATCH] network: mention that IPv4 ACD is enabled by default for 169.254.0.0/16 Prompted by #33824. --- man/systemd.network.xml | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/man/systemd.network.xml b/man/systemd.network.xml index bd078ecdca..42a31b4cdd 100644 --- a/man/systemd.network.xml +++ b/man/systemd.network.xml @@ -708,6 +708,14 @@ Table=1234 number of dynamically created network interfaces with the same network configuration and automatic address range assignment. + If an IPv4 link-local address (169.254.0.0/16) is specified, IPv4 Address Conflict + Detection (RFC 5227) is enabled for the + address. To assign an IPv4 link-local address without IPv4 Address Conflict Detection, please use + [Address] section to configure the address and disable DuplicateAddressDetection=. + [Address] +Address=169.254.10.1/24 +DuplicateAddressDetection=none + If an empty string is specified, then the all previous assignments in both [Network] and [Address] sections are cleared. @@ -1366,10 +1374,10 @@ Table=1234 Detection. See RFC 5227. When ipv6, performs IPv6 Duplicate Address Detection. See RFC 4862. Defaults to - ipv4 for IPv4 link-local addresses, ipv6 for IPv6 - addresses, and none otherwise. + ipv4 for IPv4 link-local addresses (169.254.0.0/16), ipv6 + for IPv6 addresses, and none otherwise. - + -- 2.25.1