Upstream have patch https://github.com/canonical/cloud-init/pull/894/files but, this add set mtu only "subnets:" section, docs and may by some dadasource (SmartOS) support only set mtu in "config:" section, linux's have any with subnets priority `netplan.py[WARNING]: Network config: ignoring enp0s5 device-level mtu:1500 because ipv4 subnet-level mtu:1501 provided.` proof of concept get data in config section, but linux have logic https://github.com/canonical/cloud-init/blob/master/cloudinit/net/netplan.py#L116 (line 134) https://github.com/canonical/cloud-init/blob/master/cloudinit/net/eni.py#L107 ``` --- /usr/local/lib/python3.8/site-packages/cloudinit/net/bsd.py.orig 2021-01-15 17:33:05.000000000 +0000 +++ /usr/local/lib/python3.8/site-packages/cloudinit/net/bsd.py 2021-05-31 19:30:55.808268000 +0000 @@ -37,7 +37,9 @@ class BSDRenderer(renderer.Renderer): ifname_by_mac = net.get_interfaces_by_mac() for interface in settings.iter_interfaces(): device_name = interface.get("name") + device_mtu = interface.get("mtu") device_mac = interface.get("mac_address") + LOG.info('Debug interface mtu %s', device_mtu) if device_name and re.match(r'^lo\d+$', device_name): continue if device_mac not in ifname_by_mac: @@ -64,18 +66,21 @@ class BSDRenderer(renderer.Renderer): for subnet in interface.get("subnets", []): if subnet.get('type') == 'static': + LOG.debug('Debug mtu %s', subnet.get('mtu')) + LOG.debug('Debug address %s', subnet.get('address')) if not subnet.get('netmask'): LOG.debug( 'Skipping IP %s, because there is no netmask', subnet.get('address') ) continue - LOG.debug('Configuring dev %s with %s / %s', device_name, - subnet.get('address'), subnet.get('netmask')) + LOG.debug('Configuring dev %s with %s / %s mtu %s, device mtu %s', device_name, + subnet.get('address'), subnet.get('netmask'), subnet.get('mtu'), device_mtu) self.interface_configurations[device_name] = { 'address': subnet.get('address'), 'netmask': subnet.get('netmask'), + 'mtu': device_mtu, } def _route_entries(self, settings, target=None): --- /usr/local/lib/python3.8/site-packages/cloudinit/net/freebsd.py.orig 2021-01-15 17:33:05.000000000 +0000 +++ /usr/local/lib/python3.8/site-packages/cloudinit/net/freebsd.py 2021-05-31 19:31:29.486255000 +0000 @@ -19,12 +19,13 @@ class Renderer(cloudinit.net.bsd.BSDRenderer): def write_config(self): for device_name, v in self.interface_configurations.items(): + net_config = 'DHCP' if isinstance(v, dict): - self.set_rc_config_value( - 'ifconfig_' + device_name, - v.get('address') + ' netmask ' + v.get('netmask')) - else: - self.set_rc_config_value('ifconfig_' + device_name, 'DHCP') + net_config = v.get('address') + ' netmask ' + v.get('netmask') + mtu = v.get('mtu') + if mtu: + net_config += (' mtu %d' % mtu) + self.set_rc_config_value('ifconfig_' + device_name, net_config) def start_services(self, run=False): if not run: ``` DataSourceSmartOS declare only physical section contain mtu https://github.com/canonical/cloud-init/blob/master/cloudinit/sources/DataSourceSmartOS.py#L815
Is it possible for you to upload the patch as an attachment? Also, it's preferred to use `git format-patch` to include your author line, not required strictly but it's handy for a committer to process it. Thanks!
Andrey, I've just pushed this. Feedback are welcome: https://github.com/canonical/cloud-init/pull/930
Created attachment 226228 [details] add mtu set, bump port version 21.2 Bump port version 21.2 Add patch for set MTU, FreeBSD specific part https://github.com/canonical/cloud-init/commit/6fe1983777663a1a1136fd73dc50244f2d030be8#diff-25825a25ab56718be03c5147293f56d6c93822fb59b5840034f841b7a977bddc https://github.com/canonical/cloud-init/commit/db51b656ee997382c3c4792271fa08398f43e105 testport: OK (poudriere: 122amd64, 13amd64 tested)
A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/ports/commit/?id=9620aca55054d7f4e7fc85cd2f0e01ea984c237a commit 9620aca55054d7f4e7fc85cd2f0e01ea984c237a Author: Andrey Fesenko <andrey@bsdnir.info> AuthorDate: 2021-07-05 05:23:02 +0000 Commit: Li-Wen Hsu <lwhsu@FreeBSD.org> CommitDate: 2021-07-05 05:24:22 +0000 net/cloud-init: Update to 21.2 and add patch for setting MTU PR: 256309 net/cloud-init/Makefile | 3 +- net/cloud-init/distinfo | 6 +-- .../files/patch-cloudinit_net_bsd.py (new) | 60 ++++++++++++++++++++++ .../files/patch-cloudinit_net_freebsd.py (new) | 21 ++++++++ 4 files changed, 85 insertions(+), 5 deletions(-)