I have a CentOS 6.4 VM that is getting its DHCP information from dnsmasq (a
libvirt instance). However, it is not applying the routing information.
Attached is a tcpdump of the dhcpc output. You'll see:
Default-Gateway Option 3, length 4: 192.168.122.1
However, when I run 'route -n', I get:
# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 eth0
Any ideas as to why the default route/gateway information isn't being applied?
j
--
Joshua J. Kugler - Fairbanks, Alaska
Azariah Enterprises - Programming and Website Design
joshua at azariah.com - Jabber: pedahzur at gmail.com
PGP Key: http://pgp.mit.edu/ ID 0x73B13B6A
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14:52:48.824645 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 338)
0.0.0.0.bootpc > 255.255.255.255.bootps: [udp sum ok] BOOTP/DHCP, Request from 52:54:00:93:ff:ac, length 310, xid 0x23b2de1d, Flags [none] (0x0000)
Client-Ethernet-Address 52:54:00:93:ff:ac
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Request
Requested-IP Option 50, length 4: 192.168.122.3
Parameter-Request Option 55, length 13:
Subnet-Mask, BR, Time-Zone, Classless-Static-Route
Domain-Name, Domain-Name-Server, Hostname, YD
YS, NTP, MTU, Option 119
Default-Gateway
Vendor-Class Option 60, length 43: "anaconda-Linux 2.6.32-358.el6.x86_64 x86_64"
14:52:48.825900 IP (tos 0x0, ttl 64, id 65407, offset 0, flags [none], proto UDP (17), length 335)
192.168.122.1.bootps > 192.168.122.3.bootpc: [bad udp cksum 44a1!] BOOTP/DHCP, Reply, length 307, xid 0x23b2de1d, Flags [none] (0x0000)
Your-IP 192.168.122.3
Server-IP 192.168.122.1
Client-Ethernet-Address 52:54:00:93:ff:ac
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: ACK
Server-ID Option 54, length 4: 192.168.122.1
Lease-Time Option 51, length 4: 3600
RN Option 58, length 4: 1800
RB Option 59, length 4: 3150
Subnet-Mask Option 1, length 4: 255.255.255.0
BR Option 28, length 4: 192.168.122.255
Default-Gateway Option 3, length 4: 192.168.122.1
Domain-Name-Server Option 6, length 4: 192.168.122.1
Hostname Option 12, length 13: "datacollector"