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network: always use RT_SCOPE_HOST for IPv4 loopback addresses 

For IPv6 case, use RT_SCOPE_HOST only when scope is not explicitly specified.
This commit is contained in:
Yu Watanabe 2020-10-04 10:57:03 +09:00
parent d93d655c40
commit cd1caf30c0
1 changed files with 12 additions and 1 deletions
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13
src/network/networkd-address.c
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@ -1867,8 +1867,19 @@ static int address_section_verify(Address *address) {
address->section->filename, address->section->line);
}
if (!address->scope_set && in_addr_is_localhost(address->family, &address->in_addr) > 0)
if (in_addr_is_localhost(address->family, &address->in_addr) > 0 &&
(address->family == AF_INET || !address->scope_set)) {
/* For IPv4, scope must be always RT_SCOPE_HOST.
* For IPv6, use RT_SCOPE_HOST only when it is not explicitly specified. */
if (address->scope_set && address->scope != RT_SCOPE_HOST)
log_warning_errno(SYNTHETIC_ERRNO(EINVAL),
"%s: non-host scope is set in the [Address] section from line %u. "
"Ignoring Scope= setting.",
address->section->filename, address->section->line);
address->scope = RT_SCOPE_HOST;
}
if (!FLAGS_SET(address->duplicate_address_detection, ADDRESS_FAMILY_IPV6))
address->flags |= IFA_F_NODAD;