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-rw-r--r--scripts/vyatta-interfaces.pl20
-rw-r--r--templates/interfaces/ethernet/node.tag/mtu/node.def4
2 files changed, 18 insertions, 6 deletions
diff --git a/scripts/vyatta-interfaces.pl b/scripts/vyatta-interfaces.pl
index 18fbf61..676e196 100644
--- a/scripts/vyatta-interfaces.pl
+++ b/scripts/vyatta-interfaces.pl
@@ -184,6 +184,14 @@ sub is_domain_name_set {
return $domainname;
}
+sub is_ethernet_mtu_set {
+ my $intf = shift;
+ my $config = new VyattaConfig;
+ $config->setLevel("interfaces ethernet $intf");
+ my $interface_mtu = undef;
+ $interface_mtu = $config->returnValue("mtu");
+ return $interface_mtu;
+}
sub dhcp_update_config {
my ($conf_file, $intf) = @_;
@@ -198,11 +206,15 @@ sub dhcp_update_config {
$output .= "\trequest subnet-mask, broadcast-address, routers, domain-name-servers";
my $domainname = is_domain_name_set();
if (!defined($domainname)) {
- $output .= ", domain-name;\n";
- } else {
- $output .= ";\n";
+ $output .= ", domain-name";
+ }
+ if ($intf =~ m/^eth[0-9]+$/) {
+ my $interface_mtu = is_ethernet_mtu_set($intf);
+ if (!defined($interface_mtu)) {
+ $output .= ", interface-mtu";
+ }
}
-
+ $output .= ";\n";
$output .= "}\n\n";
dhcp_write_file($conf_file, $output);
diff --git a/templates/interfaces/ethernet/node.tag/mtu/node.def b/templates/interfaces/ethernet/node.tag/mtu/node.def
index 07c102a..74c238a 100644
--- a/templates/interfaces/ethernet/node.tag/mtu/node.def
+++ b/templates/interfaces/ethernet/node.tag/mtu/node.def
@@ -1,5 +1,5 @@
type: u32
help: Set the Maximum Transmission Unit (MTU) for this interface
syntax:expression: $VAR(@) >= 68 && $VAR(@) <= 9000; "MTU must be between 68 and 9000"
-update:expression: "sudo ip link set $VAR(../@) mtu $VAR(@)"; "Error setting MTU on dev $VAR(../@)"
-delete:expression: "sudo ip link set $VAR(../@) mtu 1500"; "Error deleting MTU on dev $VAR(../@)"
+update:expression: "sudo ip link set $VAR(../@) mtu $VAR(@) && echo $VAR(@) > /tmp/dhclient_mtu_check_$VAR(../@)"; "Error setting MTU on dev $VAR(../@)"
+delete:expression: "sudo ip link set $VAR(../@) mtu 1500 && rm -f /tmp/dhclient_mtu_check_$VAR(../@)"; "Error deleting MTU on dev $VAR(../@)"