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From 42894fc33ae88f3be49aa01ac24dd1c3e96770f6 Mon Sep 17 00:00:00 2001
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From: Yu Watanabe <watanabe.yu+github@gmail.com>
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Date: Tue, 17 Dec 2019 15:32:22 +0900
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Subject: [PATCH] udev: do not fail if kernel does not support alternative
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names
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(cherry picked from commit bb181dd4a664ca8e82a8f7194261fd6531e861d8)
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Related: #1850986
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---
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man/systemd.link.xml | 3 ++-
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src/udev/net/link-config.c | 4 +++-
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2 files changed, 5 insertions(+), 2 deletions(-)
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diff --git a/man/systemd.link.xml b/man/systemd.link.xml
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index 0b0d83349d..c8ebb751ee 100644
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--- a/man/systemd.link.xml
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+++ b/man/systemd.link.xml
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@@ -348,7 +348,8 @@
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<listitem>
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<para>The alternative interface name to use. This option can be specified multiple times.
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If the empty string is assigned to this option, the list is reset, and all prior assignments
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- have no effect.</para>
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+ have no effect. If the kernel does not support the alternative names, then this setting will
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+ be ignored.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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diff --git a/src/udev/net/link-config.c b/src/udev/net/link-config.c
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index 4de8ee7d7e..8e88c8e5c4 100644
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--- a/src/udev/net/link-config.c
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+++ b/src/udev/net/link-config.c
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@@ -474,7 +474,9 @@ int link_config_apply(link_config_ctx *ctx, link_config *config,
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return log_warning_errno(r, "Could not set Alias=, MACAddress= or MTU= on %s: %m", old_name);
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r = rtnl_set_link_alternative_names(&ctx->rtnl, ifindex, config->alternative_names);
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- if (r < 0)
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+ if (r == -EOPNOTSUPP)
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+ log_debug_errno(r, "Could not set AlternativeName= on %s, ignoring: %m", old_name);
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+ else if (r < 0)
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return log_warning_errno(r, "Could not set AlternativeName= on %s: %m", old_name);
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*name = new_name;
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