Port Unreachable

[Altimit]

The Transmission runs on FreeBSD server and is seeding about 600 torrents. The total number of peers is about 150-200. After updating the Transmisson from 1.34 to 1.50(1.51) the following problem appeared: trying to connect with it I'm recieving the answer:

Frame:
+ Ethernet: Etype = Internet IP (IPv4)
+ Ipv4: Next Protocol = ICMP, Packet ID = 827, Total IP Length = 56
- Icmp: Destination Unreachable Message, 192.168.1.40
Type: Destination Unreachable Message, 3(0x3)
- DestinationUnreachable:
Code: Port Unreachable 3(0x3)
Checksum: 26366 (0x66FE)
Unused: 0 (0x0)
- Data: Next Protocol = UDP, Packet ID = 25387, Total IP Length = 95
- Versions: IPv4, Internet Protocol; Header Length = 20
Version: (0100....) IPv4, Internet Protocol
HeaderLength: (....0101) 20 bytes (0x5)
- DifferentiatedServicesField: DSCP: 8, ECN: 0
DSCP: (001000..) Differentiated services codepoint 8
ECT: (......0.) ECN-Capable Transport not set
CE: (.......0) ECN-CE not set
TotalLength: 95 (0x5F)
Identification: 25387 (0x632B)
- FragmentFlags: 0 (0x0)
Reserved: (0...............)
DF: (.0..............) Fragment if necessary
MF: (..0.............) This is the last fragment
Offset: (...0000000000000) 0
TimeToLive: 126 (0x7E)
NextProtocol: UDP, 17(0x11)
Checksum: 7243 (0x1C4B)
SourceAddress: 192.168.1.40
DestinationAddress: 192.168.1.45
OriginalIPPayload: Binary Large Object (8 Bytes)

Firewall is not blocking the connections.
Even so, the Transmission still accepts some connections (I can see users downloading information from it). If I leave the torrent on, in the end I succeed in connecting with it in some time (it may be a couple of hours). When I start transmission-daemon with --foreground key I don't recieve any error messages. Rolling back to 1.34 solves the problem.

1.34 configuration

Code: Select all

{
    "blocklist-enabled": 0, 
    "download-dir": "\/raid\/data", 
    "download-limit": 100, 
    "download-limit-enabled": 0, 
    "encryption": 1, 
    "max-peers-global": 1000, 
    "peer-port": 51413, 
    "pex-enabled": 1, 
    "port-forwarding-enabled": 0, 
    "rpc-access-control-list": "+127.0.0.1", 
    "rpc-authentication-required": 1, 
    "rpc-password": "********", 
    "rpc-port": 9091, 
    "rpc-username": "admin", 
    "upload-limit": 100, 
    "upload-limit-enabled": 0
}

1.50 configuration

Code: Select all

{
    "blocklist-enabled": 0, 
    "download-dir": "\/raid\/data", 
    "download-limit": 100, 
    "download-limit-enabled": 0, 
    "encryption": 1, 
    "lazy-bitfield-enabled": 1, 
    "message-level": 2, 
    "open-file-limit": 1000, 
    "peer-limit-global": 1000, 
    "peer-limit-per-torrent": 1000, 
    "peer-port": 51413, 
    "peer-port-random-enabled": 0, 
    "peer-port-random-high": 65535, 
    "peer-port-random-low": 65000, 
    "peer-socket-tos": 0, 
    "pex-enabled": 1, 
    "port-forwarding-enabled": 0, 
    "preallocation": 0, 
    "proxy": "", 
    "proxy-auth-enabled": 0, 
    "proxy-auth-password": "", 
    "proxy-auth-username": "", 
    "proxy-enabled": 0, 
    "proxy-port": 80, 
    "proxy-type": 0, 
    "rpc-authentication-required": 1, 
    "rpc-enabled": 1, 
    "rpc-password": "********", 
    "rpc-port": 9091, 
    "rpc-username": "admin", 
    "rpc-whitelist": "127.0.0.1", 
    "rpc-whitelist-enabled": 1, 
    "upload-limit": 100, 
    "upload-limit-enabled": 0, 
    "upload-slots-per-torrent": 1000
}

Could you please tell me, what kind of problem this may be?

[Altimit]

Can you at least say whether it is a bug or my configuration problem?

[twgi]

is it the longest issue on your bugtracker?)
can u be so kind to answer? this question is very important for us.