On Tue, Dec 11, 2018 at 05:05:43PM +0100, Casey Callendrello wrote:
This adds an additional directive to the dnsmasq configuration file that
notifies clients via dhcp about the link's MTU. Guests can then choose
adjust their link accordingly.
Signed-off-by: Casey Callendrello <cdc@xxxxxxxxxx>
---
src/network/bridge_driver.c | 7 ++++++
.../networkxml2confdata/nat-network-mtu.conf | 19 +++++++++++++++
tests/networkxml2confdata/nat-network-mtu.xml | 22 +++++++++++++++++
tests/networkxml2conftest.c | 1 +
tests/networkxml2xmlin/nat-network-mtu.xml | 22 +++++++++++++++++
tests/networkxml2xmlout/nat-network-mtu.xml | 24 +++++++++++++++++++
tests/networkxml2xmltest.c | 1 +
7 files changed, 96 insertions(+)
create mode 100644 tests/networkxml2confdata/nat-network-mtu.conf
create mode 100644 tests/networkxml2confdata/nat-network-mtu.xml
create mode 100644 tests/networkxml2xmlin/nat-network-mtu.xml
create mode 100644 tests/networkxml2xmlout/nat-network-mtu.xml
diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
index 4bbc4f5a6d..81edf72493 100644
--- a/src/network/bridge_driver.c
+++ b/src/network/bridge_driver.c
@@ -1506,6 +1506,13 @@ networkDnsmasqConfContents(virNetworkObjPtr obj,
dctx->addnhostsfile->path);
}
+ /* Configure DHCP to tell clients about the MTU.
+ */
This comment can fit on one line,
+ if (def->mtu > 0) {
+ virBufferAsprintf(&configbuf, "dhcp-option=option:mtu,%d\n",
+ def->mtu);
and so can this command.
+ }
+
/* Are we doing RA instead of radvd? */
if (DNSMASQ_RA_SUPPORT(caps)) {
if (ipv6def) {
With that adjusted: Reviewed-by: Ján Tomko <jtomko@xxxxxxxxxx> Jano
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