dasharo/systemd
0
0
Fork 0
mirror of https://github.com/Dasharo/systemd.git synced 2026-03-06 15:02:31 -08:00
Code Issues Packages Projects Releases Wiki Activity

network/ndisc: do not set per-route MTU and hop limit

Browse Source 
Setting MTU announced in RA message to routes is problematic, as the
value may be larger than the device MTU (IFLA_MTU), and in such case the
route cannot be used.

These two properties are now set per-interface, and gracefully handled
such invalid cases. Hence not necessary to set them to each route.

Follow-up for #32195.
This commit is contained in:
Yu Watanabe
2024-04-11 12:05:07 +09:00
parent 3ec49af973
commit 2e73aa507b
2 changed files with 10 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
test/test-network/systemd-networkd-tests.py
View File

@@ -5668,15 +5668,6 @@ class NetworkdRATests(unittest.TestCase, Utilities):
self.assertIn('2002:da8:1:0:b47e:7975:fc7a:7d6e', output)
self.assertIn('2002:da8:2:0:f689:561a:8eda:7443', output)
def check_router_hop_limit(self, hop_limit):
self.wait_route('client', rf'default via fe80::1034:56ff:fe78:9a99 proto ra .* hoplimit {hop_limit}', ipv='-6', timeout_sec=10)
output = check_output('ip -6 route show dev client default via fe80::1034:56ff:fe78:9a99')
print(output)
self.assertIn(f'hoplimit {hop_limit}', output)
self.check_ipv6_sysctl_attr('client', 'hop_limit', f'{hop_limit}')
def test_router_hop_limit(self):
copy_network_unit('25-veth-client.netdev',
'25-veth-router.netdev',
@@ -5686,18 +5677,24 @@ class NetworkdRATests(unittest.TestCase, Utilities):
'25-veth-router-hop-limit.network',
'25-bridge99.network')
start_networkd()
self.wait_online('client-p:enslaved',
self.wait_online('client:routable', 'client-p:enslaved',
'router:degraded', 'router-p:enslaved',
'bridge99:routable')
self.check_router_hop_limit(42)
self.check_ipv6_sysctl_attr('client', 'hop_limit', '42')
with open(os.path.join(network_unit_dir, '25-veth-router-hop-limit.network'), mode='a', encoding='utf-8') as f:
f.write('\n[IPv6SendRA]\nHopLimit=43\n')
networkctl_reload()
self.check_router_hop_limit(43)
for _ in range(20):
output = read_ipv6_sysctl_attr('client', 'hop_limit')
if output == '43':
break
time.sleep(0.5)
self.check_ipv6_sysctl_attr('client', 'hop_limit', '43')
def test_router_preference(self):
copy_network_unit('25-veth-client.netdev',