Public bug reported:
Network Manager when using a T-mobile Rocket USB HSPA stick, fails to
set the DNS and default route correctly, resulting in unusable network.
I am using an Oneiric Beta 2 boot cd to rule out existing settings
causing the issue.
Here is the NetworkManager provided settings. You can see that the
local IP address is placed at front of resolv.conf and that the DHCP
provided default router is missing and a device route used instead for
the default route, which does not work.
usb0 Link encap:Ethernet HWaddr 02:2b:5a:ab:df:a5
inet addr:25.84.230.68 Bcast:25.84.230.68 Mask:255.255.255.255
inet6 addr: fe80::2b:5aff:feab:dfa5/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:83 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:9999 (9.9 KB)
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 usb0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 usb0
# Generated by NetworkManager
nameserver 25.84.230.68
nameserver 10.177.0.34
nameserver 10.166.208.148
Here is the DHCP traffic from dhclient usb0:
16:53:03.886277 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP
(17), length 328)
0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from
02:2b:5a:ab:df:a5, length 300, xid 0x914dec09, Flags [none]
Client-Ethernet-Address 02:2b:5a:ab:df:a5
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
Hostname Option 12, length 6: "ubuntu"
Parameter-Request Option 55, length 13:
Subnet-Mask, BR, Time-Zone, Default-Gateway
Domain-Name, Domain-Name-Server, Option 119, Hostname
Netbios-Name-Server, Netbios-Scope, MTU, Classless-Static-Route
NTP
16:53:03.886844 IP (tos 0x0, ttl 255, id 1, offset 0, flags [none], proto UDP
(17), length 336)
25.84.230.69.67 > 25.84.230.68.68: BOOTP/DHCP, Reply, length 308, xid
0x914dec09, Flags [none]
Your-IP 25.84.230.68
Server-IP 25.84.230.69
Client-Ethernet-Address 02:2b:5a:ab:df:a5
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Offer
Server-ID Option 54, length 4: 25.84.230.69
RN Option 58, length 4: 43200
RB Option 59, length 4: 57024
Lease-Time Option 51, length 4: 86400
Subnet-Mask Option 1, length 4: 255.255.255.0
Default-Gateway Option 3, length 4: 25.84.230.69
Domain-Name-Server Option 6, length 8: 10.177.0.34,10.166.208.148
16:53:03.887086 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP
(17), length 328)
0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from
02:2b:5a:ab:df:a5, length 300, xid 0x914dec09, Flags [none]
Client-Ethernet-Address 02:2b:5a:ab:df:a5
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Request
Server-ID Option 54, length 4: 25.84.230.69
Requested-IP Option 50, length 4: 25.84.230.68
Hostname Option 12, length 6: "ubuntu"
Parameter-Request Option 55, length 13:
Subnet-Mask, BR, Time-Zone, Default-Gateway
Domain-Name, Domain-Name-Server, Option 119, Hostname
Netbios-Name-Server, Netbios-Scope, MTU, Classless-Static-Route
NTP
16:53:03.887461 IP (tos 0x0, ttl 255, id 2, offset 0, flags [none], proto UDP
(17), length 336)
25.84.230.69.67 > 25.84.230.68.68: BOOTP/DHCP, Reply, length 308, xid
0x914dec09, Flags [none]
Your-IP 25.84.230.68
Server-IP 25.84.230.69
Client-Ethernet-Address 02:2b:5a:ab:df:a5
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: ACK
Server-ID Option 54, length 4: 25.84.230.69
Lease-Time Option 51, length 4: 86400
Subnet-Mask Option 1, length 4: 255.255.255.0
Default-Gateway Option 3, length 4: 25.84.230.69
Domain-Name-Server Option 6, length 8: 10.177.0.34,10.166.208.148
Which results in corrected settings:
usb0 Link encap:Ethernet HWaddr 02:2b:5a:ab:df:a5
inet addr:25.84.230.68 Bcast:25.84.230.255 Mask:255.255.255.0
inet6 addr: fe80::2b:5aff:feab:dfa5/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:3 errors:0 dropped:0 overruns:0 frame:0
TX packets:144 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1008 (1.0 KB) TX bytes:19072 (19.0 KB)
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 25.84.230.69 0.0.0.0 UG 0 0 0 usb0
25.84.230.0 0.0.0.0 255.255.255.0 U 0 0 0 usb0
nameserver 10.177.0.34
nameserver 10.166.208.148
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/871898
Title:
n-m fails to correctly set T-Mobile DNS and default route, dhclient
repairs it
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