いつも心に太陽を。: Solaris DHCP

Solaris DHCP client

まえがき

なんかおかしーよっ！とか思ったら、snoop を使って、パケットの中身を見てみようと。

$ snoop -V -i snoop_empress.out ________________________________ 1 0.00000 OLD-BROADCAST -> BROADCAST ETHER Type=0800 (IP), size = 342 bytes 1 0.00000 OLD-BROADCAST -> BROADCAST IP D=255.255.255.255 S=0.0.0.0 LEN=328, ID=0 1 0.00000 OLD-BROADCAST -> BROADCAST UDP D=67 S=68 LEN=308 1 0.00000 OLD-BROADCAST -> BROADCAST DHCP/BOOTP DHCPDISCOVER ________________________________ 2 1.00810 queenly -> queenly-7 ETHER Type=0800 (IP), size = 342 bytes 2 1.00810 queenly -> queenly-7 IP D=192.168.0.7 S=192.168.0.1 LEN=328, ID=38663 2 1.00810 queenly -> queenly-7 UDP D=68 S=67 LEN=308 2 1.00810 queenly -> queenly-7 DHCP/BOOTP DHCPOFFER ________________________________ 3 1.99995 OLD-BROADCAST -> BROADCAST ETHER Type=0800 (IP), size = 342 bytes 3 1.99995 OLD-BROADCAST -> BROADCAST IP D=255.255.255.255 S=0.0.0.0 LEN=328, ID=1 3 1.99995 OLD-BROADCAST -> BROADCAST UDP D=67 S=68 LEN=308 3 1.99995 OLD-BROADCAST -> BROADCAST DHCP/BOOTP DHCPREQUEST ________________________________ 4 0.03854 queenly -> queenly-7 ETHER Type=0800 (IP), size = 342 bytes 4 0.03854 queenly -> queenly-7 IP D=192.168.0.7 S=192.168.0.1 LEN=328, ID=40703 4 0.03854 queenly -> queenly-7 UDP D=68 S=67 LEN=308 4 0.03854 queenly -> queenly-7 DHCP/BOOTP DHCPACK

ETHER: ----- Ether Header ----- ETHER: ETHER: Packet 1 arrived at 19:03:6.46 : IP: ----- IP Header ----- : UDP: ----- UDP Header ----- : DHCP: ----- Dynamic Host Configuration Protocol ----- DHCP: DHCP: Hardware address type (htype) = 1 (Ethernet (10Mb)) DHCP: Hardware address length (hlen) = 6 octets DHCP: Relay agent hops = 0 DHCP: Transaction ID = 0xdfc44cd7 DHCP: Time since boot = 0 seconds DHCP: Flags = 0x0000 DHCP: Client address (ciaddr) = 0.0.0.0 DHCP: Your client address (yiaddr) = 0.0.0.0 DHCP: Next server address (siaddr) = 0.0.0.0 DHCP: Relay agent address (giaddr) = 0.0.0.0 DHCP: Client hardware address (chaddr) = 08:00:20:81:F5:41 DHCP: DHCP: ----- (Options) field options ----- DHCP: DHCP: Message type = DHCPDISCOVER DHCP: Maximum DHCP Message Size = 1500 bytes DHCP: IP Address Lease Time = -1 seconds DHCP: Client Class Identifier = "SUNW.Ultra-5_10" DHCP: Requested Options: DHCP: 1 (Subnet Mask) DHCP: 3 (Router) DHCP: 12 (Client Hostname) DHCP: 43 (Vendor Specific Options) ETHER: ----- Ether Header ----- ETHER: ETHER: Packet 2 arrived at 19:03:7.46 : IP: ----- IP Header ----- : UDP: ----- UDP Header ----- : DHCP: ----- Dynamic Host Configuration Protocol ----- DHCP: DHCP: Hardware address type (htype) = 1 (Ethernet (10Mb)) DHCP: Hardware address length (hlen) = 6 octets DHCP: Relay agent hops = 0 DHCP: Transaction ID = 0xdfc44cd7 DHCP: Time since boot = 0 seconds DHCP: Flags = 0x0000 DHCP: Client address (ciaddr) = 0.0.0.0 DHCP: Your client address (yiaddr) = 192.168.0.7 DHCP: Next server address (siaddr) = 0.0.0.0 DHCP: Relay agent address (giaddr) = 0.0.0.0 DHCP: Client hardware address (chaddr) = 08:00:20:81:F5:41 DHCP: DHCP: ----- (Options) field options ----- DHCP: DHCP: Message type = DHCPOFFER DHCP: DHCP Server Identifier = 192.168.0.1 DHCP: UTC Time Offset = 32400 seconds DHCP: DNS Servers at = 61.199.241.226 DHCP: Broadcast Address = 192.168.0.255 DHCP: Router at = 192.168.0.1 DHCP: Subnet Mask = 255.255.255.0 DHCP: IP Address Lease Time = 3600 seconds DHCP: Client Hostname = queenly-7 ETHER: ----- Ether Header ----- ETHER: Packet 3 arrived at 19:03:9.46 : IP: ----- IP Header ----- : UDP: ----- UDP Header ----- : DHCP: ----- Dynamic Host Configuration Protocol ----- DHCP: DHCP: Hardware address type (htype) = 1 (Ethernet (10Mb)) DHCP: Hardware address length (hlen) = 6 octets DHCP: Relay agent hops = 0 DHCP: Transaction ID = 0xcc7a2f68 DHCP: Time since boot = 0 seconds DHCP: Flags = 0x0000 DHCP: Client address (ciaddr) = 0.0.0.0 DHCP: Your client address (yiaddr) = 0.0.0.0 DHCP: Next server address (siaddr) = 0.0.0.0 DHCP: Relay agent address (giaddr) = 0.0.0.0 DHCP: Client hardware address (chaddr) = 08:00:20:81:F5:41 DHCP: DHCP: ----- (Options) field options ----- DHCP: DHCP: Message type = DHCPREQUEST DHCP: IP Address Lease Time = 3600 seconds DHCP: Maximum DHCP Message Size = 1500 bytes DHCP: Requested IP Address = 192.168.0.7 DHCP: DHCP Server Identifier = 192.168.0.1 DHCP: Client Class Identifier = "SUNW.Ultra-5_10" DHCP: Requested Options: DHCP: 1 (Subnet Mask) DHCP: 3 (Router) DHCP: 12 (Client Hostname) DHCP: 43 (Vendor Specific Options) ETHER: ----- Ether Header ----- ETHER: ETHER: Packet 4 arrived at 19:03:9.50 : IP: ----- IP Header ----- : UDP: ----- UDP Header ----- : DHCP: ----- Dynamic Host Configuration Protocol ----- DHCP: DHCP: Hardware address type (htype) = 1 (Ethernet (10Mb)) DHCP: Hardware address length (hlen) = 6 octets DHCP: Relay agent hops = 0 DHCP: Transaction ID = 0xcc7a2f68 DHCP: Time since boot = 0 seconds DHCP: Flags = 0x0000 DHCP: Client address (ciaddr) = 0.0.0.0 DHCP: Your client address (yiaddr) = 192.168.0.7 DHCP: Next server address (siaddr) = 0.0.0.0 DHCP: Relay agent address (giaddr) = 0.0.0.0 DHCP: Client hardware address (chaddr) = 08:00:20:81:F5:41 DHCP: DHCP: ----- (Options) field options ----- DHCP: DHCP: Message type = DHCPACK DHCP: DHCP Server Identifier = 192.168.0.1 DHCP: UTC Time Offset = 32400 seconds DHCP: DNS Servers at = 61.199.241.226 DHCP: Broadcast Address = 192.168.0.255 DHCP: Router at = 192.168.0.1 DHCP: Subnet Mask = 255.255.255.0 DHCP: IP Address Lease Time = 3600 seconds DHCP: Client Hostname = queenly-7