MTU not applied to certain interfaces

Forst

There is a problem with setting interface MTU through the web interface. I have different kinds of interfaces set up with special MTU settings for some of them. It turns out, not all settings are applied properly, checked with ifconfig.

| **| Name | Type | Configured MTU | Actual MTU |
| WAN | PPPoE | auto | 1492 |
| LAN | Physical | 9000 | 1500 |
| RIPE | Physical | 9000 | 1500 |
| MAN | Physical | auto | 1500 |
| BR_LAN | Bridge | 9000 | 1500 |
| 6IN4 | GIF | 1472 | 1472 |
| PUBLICWLAN | VLAN | 9000 | 9000 |

2.2-ALPHA (amd64)
built on Thu Apr 17 04:15:34 CDT 2014
FreeBSD 10.0-STABLE

P.S. Noticed something interesting as well, not strictly related to pfSense.

vmx0 options=60079b <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum,tso4,tso6,lro,rxcsum_ipv6,txcsum_ipv6>vmx1 options=61039b <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum,tso4,tso6,vlan_hwfilter,rxcsum_ipv6,txcsum_ipv6>vmx2 options=60039b<rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum,tso4,tso6,rxcsum_ipv6,txcsum_ipv6></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum,tso4,tso6,rxcsum_ipv6,txcsum_ipv6></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum,tso4,tso6,vlan_hwfilter,rxcsum_ipv6,txcsum_ipv6></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum,tso4,tso6,lro,rxcsum_ipv6,txcsum_ipv6>

How come three physically similar interfaces (all VMXNET3) have different options available? Is it related to vmx1 having a VLAN assigned to it and vmx2 being down?** |

eri--

Please share your config.xml at least the interfaces part.

The other is normal if you have vlan assigned.

Forst

Thank you! As for the file, here it is (part of it, anyway):

 <interfaces><wan><enable><if>pppoe0</if>
        <blockpriv><blockbogons><ipaddr>pppoe</ipaddr>
        <spoofmac></spoofmac></blockbogons></blockpriv></enable></wan> 
    <lan><enable><if>vmx1</if>

        <ipaddr>192.168.1.1</ipaddr>
        <subnet>24</subnet>
        <ipaddrv6>2001:67c:2158:a019::1</ipaddrv6>
        <subnetv6>120</subnetv6>
        <blockbogons><spoofmac><mtu>9000</mtu></spoofmac></blockbogons></enable></lan> 
    <opt1><if>vmx2</if>

        <enable><spoofmac><mtu>9000</mtu></spoofmac></enable></opt1> 
    <opt2><if>vmx0</if>
        <enable><ipaddr>dhcp</ipaddr>
        <dhcphostname><alias-address><alias-subnet>32</alias-subnet>
        <dhcprejectfrom><adv_dhcp_pt_timeout><adv_dhcp_pt_retry><adv_dhcp_pt_select_timeout><adv_dhcp_pt_reboot><adv_dhcp_pt_backoff_cutoff><adv_dhcp_pt_initial_interval><adv_dhcp_pt_values>SavedCfg</adv_dhcp_pt_values>
        <adv_dhcp_send_options><adv_dhcp_request_options><adv_dhcp_required_options><adv_dhcp_option_modifiers><adv_dhcp_config_advanced><adv_dhcp_config_file_override><adv_dhcp_config_file_override_path><blockbogons><spoofmac></spoofmac></blockbogons></adv_dhcp_config_file_override_path></adv_dhcp_config_file_override></adv_dhcp_config_advanced></adv_dhcp_option_modifiers></adv_dhcp_required_options></adv_dhcp_request_options></adv_dhcp_send_options></adv_dhcp_pt_initial_interval></adv_dhcp_pt_backoff_cutoff></adv_dhcp_pt_reboot></adv_dhcp_pt_select_timeout></adv_dhcp_pt_retry></adv_dhcp_pt_timeout></dhcprejectfrom></alias-address></dhcphostname></enable></opt2> 
    <opt3><if>bridge0</if>
        <enable><spoofmac><mtu>9000</mtu></spoofmac></enable></opt3> 
    <opt4><if>gif0</if>
        <enable><blockbogons><spoofmac><mtu>1472</mtu></spoofmac></blockbogons></enable></opt4> 
    <opt5><if>vmx1_vlan4</if>
        <enable><ipaddr>192.168.2.1</ipaddr>
        <subnet>24</subnet>
        <ipaddrv6>2001:67c:2158:a019::2:1</ipaddrv6>
        <subnetv6>120</subnetv6>
        <blockbogons><spoofmac><mtu>9000</mtu></spoofmac></blockbogons></enable></opt5></interfaces>