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gonzojl

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Tuesday, June 21st, 2016 9:00 AM

AppleTV and Sonos unable to be assigned a DHCP address with NETGEAR CG3000DCR

For some reason my Apple TV and Sonos connected over Ethernet are unable to retrieve a DHCP address from the Netgear router I have from Comcast.  All my other devices seem to be able to retrieve addresses just fine.

 

To do some troubleshooting I captured logs with tcpdump.  As you can see both the AppleTV and the Sonos are doing DHCP DISCOVERs but seem to receive no replies from the Netgear.  Since they receive no reply, they then start trying DHCP REQUESTs for specific IP addresses and are NACKed by the router (I assume its because it wasn't offered to them).  I've found that after a while the Netgear router will not even bother NACKing the REQUESTs.

 

Any ideas on what's going on?  I also find this happens occasionally with my Xbox One as well.

 

hammer2:~ jefflee$ sudo tcpdump port 67 or port 68 -e -n -v
tcpdump: data link type PKTAP
tcpdump: listening on pktap, link-type PKTAP (Packet Tap), capture size 262144 bytes
08:47:31.369964 60:03:08:b5:fd:25 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x0, ttl 255, id 13169, offset 0, flags [none], proto UDP (17), length 328)
0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 60:03:08:b5:fd:25, length 300, xid 0xfa21ec45, Flags [none]
Client-Ethernet-Address 60:03:08:b5:fd:25
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
Parameter-Request Option 55, length 6:
Subnet-Mask, Default-Gateway, Domain-Name-Server, Domain-Name
Option 119, Option 252
MSZ Option 57, length 2: 1500
Client-ID Option 61, length 7: ether 60:03:08:b5:fd:25
Lease-Time Option 51, length 4: 7776000
Hostname Option 12, length 14: "MasterBedroom2"
08:47:31.370805 60:03:08:b5:fd:25 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x0, ttl 255, id 13169, offset 0, flags [none], proto UDP (17), length 328)
0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 60:03:08:b5:fd:25, length 300, xid 0xfa21ec45, Flags [none]
Client-Ethernet-Address 60:03:08:b5:fd:25
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
Parameter-Request Option 55, length 6:
Subnet-Mask, Default-Gateway, Domain-Name-Server, Domain-Name
Option 119, Option 252
MSZ Option 57, length 2: 1500
Client-ID Option 61, length 7: ether 60:03:08:b5:fd:25
Lease-Time Option 51, length 4: 7776000
Hostname Option 12, length 14: "MasterBedroom2"
08:47:31.640755 c8:69:cd:28:97:5c > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x0, ttl 255, id 24717, offset 0, flags [none], proto UDP (17), length 328)
0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from c8:69:cd:28:97:5c, length 300, xid 0x5bb2972e, secs 2, Flags [none]
Client-Ethernet-Address c8:69:cd:28:97:5c
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Request
Parameter-Request Option 55, length 7:
Subnet-Mask, Classless-Static-Route, Default-Gateway, Domain-Name-Server
Domain-Name, Option 119, Option 252
MSZ Option 57, length 2: 1500
Client-ID Option 61, length 7: ether c8:69:cd:28:97:5c
Requested-IP Option 50, length 4: 10.1.10.17
Server-ID Option 54, length 4: 10.1.10.1
Hostname Option 12, length 8: "Apple-TV"
08:47:31.642051 c8:69:cd:28:97:5c > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x0, ttl 255, id 24717, offset 0, flags [none], proto UDP (17), length 328)
0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from c8:69:cd:28:97:5c, length 300, xid 0x5bb2972e, secs 2, Flags [none]
Client-Ethernet-Address c8:69:cd:28:97:5c
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Request
Parameter-Request Option 55, length 7:
Subnet-Mask, Classless-Static-Route, Default-Gateway, Domain-Name-Server
Domain-Name, Option 119, Option 252
MSZ Option 57, length 2: 1500
Client-ID Option 61, length 7: ether c8:69:cd:28:97:5c
Requested-IP Option 50, length 4: 10.1.10.17
Server-ID Option 54, length 4: 10.1.10.1
Hostname Option 12, length 8: "Apple-TV"
08:47:31.647641 c4:04:15:33:f7:f3 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x0, ttl 128, id 57005, offset 0, flags [none], proto UDP (17), length 328)
10.1.10.1.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 300, xid 0x5bb2972e, Flags [Broadcast]
Server-IP 10.1.10.1
Client-Ethernet-Address c8:69:cd:28:97:5c
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: NACK
08:47:31.648635 c4:04:15:33:f7:f3 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x0, ttl 128, id 57005, offset 0, flags [none], proto UDP (17), length 328)
10.1.10.1.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 300, xid 0x5bb2972e, Flags [Broadcast]
Server-IP 10.1.10.1
Client-Ethernet-Address c8:69:cd:28:97:5c
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: NACK
08:47:32.382437 60:03:08:b5:fd:25 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x0, ttl 255, id 13170, offset 0, flags [none], proto UDP (17), length 328)
0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 60:03:08:b5:fd:25, length 300, xid 0xfa21ec45, secs 1, Flags [none]
Client-Ethernet-Address 60:03:08:b5:fd:25
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Request
Parameter-Request Option 55, length 6:
Subnet-Mask, Default-Gateway, Domain-Name-Server, Domain-Name
Option 119, Option 252
MSZ Option 57, length 2: 1500
Client-ID Option 61, length 7: ether 60:03:08:b5:fd:25
Requested-IP Option 50, length 4: 10.1.10.17
Server-ID Option 54, length 4: 10.1.10.1
Hostname Option 12, length 14: "MasterBedroom2"
08:47:32.523162 60:03:08:b5:fd:25 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x0, ttl 255, id 13170, offset 0, flags [none], proto UDP (17), length 328)
0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 60:03:08:b5:fd:25, length 300, xid 0xfa21ec45, secs 1, Flags [none]
Client-Ethernet-Address 60:03:08:b5:fd:25
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Request
Parameter-Request Option 55, length 6:
Subnet-Mask, Default-Gateway, Domain-Name-Server, Domain-Name
Option 119, Option 252
MSZ Option 57, length 2: 1500
Client-ID Option 61, length 7: ether 60:03:08:b5:fd:25
Requested-IP Option 50, length 4: 10.1.10.17
Server-ID Option 54, length 4: 10.1.10.1
Hostname Option 12, length 14: "MasterBedroom2"
08:47:33.388334 60:03:08:b5:fd:25 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x0, ttl 255, id 13171, offset 0, flags [none], proto UDP (17), length 328)
0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 60:03:08:b5:fd:25, length 300, xid 0xfa21ec45, secs 2, Flags [none]
Client-Ethernet-Address 60:03:08:b5:fd:25
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Request
Parameter-Request Option 55, length 6:
Subnet-Mask, Default-Gateway, Domain-Name-Server, Domain-Name
Option 119, Option 252
MSZ Option 57, length 2: 1500
Client-ID Option 61, length 7: ether 60:03:08:b5:fd:25
Requested-IP Option 50, length 4: 10.1.10.17
Server-ID Option 54, length 4: 10.1.10.1
Hostname Option 12, length 14: "MasterBedroom2"
08:47:33.393913 c4:04:15:33:f7:f3 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x0, ttl 128, id 57005, offset 0, flags [none], proto UDP (17), length 328)
10.1.10.1.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 300, xid 0xfa21ec45, Flags [Broadcast]
Server-IP 10.1.10.1
Client-Ethernet-Address 60:03:08:b5:fd:25
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: NACK
08:47:33.647148 c8:69:cd:28:97:5c > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x0, ttl 255, id 24718, offset 0, flags [none], proto UDP (17), length 328)
0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from c8:69:cd:28:97:5c, length 300, xid 0x5bb2972e, secs 4, Flags [none]
Client-Ethernet-Address c8:69:cd:28:97:5c
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Request
Parameter-Request Option 55, length 7:
Subnet-Mask, Classless-Static-Route, Default-Gateway, Domain-Name-Server
Domain-Name, Option 119, Option 252
MSZ Option 57, length 2: 1500
Client-ID Option 61, length 7: ether c8:69:cd:28:97:5c
Requested-IP Option 50, length 4: 10.1.10.17
Server-ID Option 54, length 4: 10.1.10.1
Hostname Option 12, length 8: "Apple-TV"
08:47:33.652682 c4:04:15:33:f7:f3 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x0, ttl 128, id 57005, offset 0, flags [none], proto UDP (17), length 328)
10.1.10.1.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 300, xid 0x5bb2972e, Flags [Broadcast]
Server-IP 10.1.10.1
Client-Ethernet-Address c8:69:cd:28:97:5c
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: NACK

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8 years ago

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VBSSP-RICH

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1.4K Messages

8 years ago

Hello gonzojl and welcome,

 

Not sure why your ethernet connected TVs are not able to aquire a DHCP dynamic address from your NetGear3000 (NG3K). You might was to try to use a higher DHCP address within your range which is either 10.1.10.2 (or 10.1.10.10) to 10.1.10.252 (or 10.1.10.199). So you can set up your TV network to use DHCP address 10.1.10.190, default gateway = 10.1.10.1 and this will force feed one of your TVs to use 10.1.10.190 as its dedicated IP address. Then use 10.1.10.191 for the next and so on......

 

Hope this helps you out.

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