network/radv: allow to announce prefix and route information with zero lifetime

Setting zero lifetime for prefix or route information option is valid,
and is used for announcing the prefix or route is invalidated.

Fixes #26239.

diff --git a/src/network/networkd-radv.c b/src/network/networkd-radv.c
index 7fd97e7206ffd4ab4168321668eeb909ce8b6791..82c62dad815ef0ef2dfff68c60d47ebf856c9d68 100644 (file)
--- a/src/network/networkd-radv.c
+++ b/src/network/networkd-radv.c
@@ -816,12 +816,6 @@ static int prefix_section_verify(Prefix *p) {
                 p->assign = false;
         }
 
-        if (p->valid_lifetime == 0)
-                return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
-                                         "%s: The valid lifetime of prefix cannot be zero. "
-                                         "Ignoring [IPv6Prefix] section from line %u.",
-                                         p->section->filename, p->section->line);
-
         if (p->preferred_lifetime > p->valid_lifetime)
                 return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
                                          "%s: The preferred lifetime %s is longer than the valid lifetime %s. "
@@ -854,12 +848,6 @@ static int route_prefix_section_verify(RoutePrefix *p) {
                                          "Valid range is 0…128. Ignoring [IPv6RoutePrefix] section from line %u.",
                                          p->section->filename, p->prefixlen, p->section->line);
 
-        if (p->lifetime == 0)
-                return log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
-                                         "%s: The lifetime of route cannot be zero. "
-                                         "Ignoring [IPv6RoutePrefix] section from line %u.",
-                                         p->section->filename, p->section->line);
-
         return 0;
 }