Marek wants you to know that phase2 negotiation failed due to time up waiting for phase1.

Thank you, AS5089, for only being able to route to 212.183.128.0 every other minute:

telnet -b 81.105.XXX.YYY 212.183.134.1 80
Trying 212.183.134.1...
telnet: Unable to connect to remote host: Connection refused
telnet -b 81.105.XXX.YYY 212.183.134.1 80
Trying 212.183.134.1...
telnet: Unable to connect to remote host: Connection refused
telnet -b 81.105.XXX.YYY 212.183.134.1 80
Trying 212.183.134.1...
telnet: Unable to connect to remote host: Connection refused

…time passes…

telnet -b 81.105.XXX.YYY 212.183.134.1 80
Trying 212.183.134.1...

telnet -b 81.105.XXX.YYY 212.183.134.1 80
Trying 212.183.134.1...

telnet -b 81.105.XXX.YYY 212.183.134.1 80
Trying 212.183.134.1...

…more time passes…

telnet -b 81.105.XXX.YYY 212.183.134.1 80
Trying 212.183.134.1...
telnet: Unable to connect to remote host: Connection refused

Start mtr:

 Host                                          Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. YYY-XXX-105-81.static.virginmedia.com       0.0%    46    0.9   0.9   0.9   1.3   0.1
 2. mant-lam-1-s401-0.network.virginmedia.net   0.0%    46    8.0  34.2   7.9 174.2  50.4
 3. manc-t3core-1b-ge-015-0.network.virginmedi  0.0%    45   11.2   8.2   8.0  11.2   0.5
 4. man-bb-a-as0-0.network.virginmedia.net      0.0%    45    8.8   9.1   8.7  14.8   1.1
 5. lee-bb-b-as2-0.network.virginmedia.net      0.0%    45    9.3   9.3   9.1   9.4   0.1
 6. Tengigabitethernet7-1.401ar4.LON3.gblx.net  0.0%    45   69.2  24.9  21.9  81.1  11.1
 7. te9-3-10G.ar6.LON3.gblx.net                 0.0%    45   22.3  23.5  21.9  68.6   7.0
 8. VODAFONE-LTD.TenGigabitEthernet7-1.ar6.LON  0.0%    45   30.7  33.4  30.6 150.7  17.9
 9. ???
10. 212.183.134.1                               0.0%    45   35.2  36.1  35.2  40.5   1.7

…wait another 10 seconds and mtr now shows…

 Host                                          Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. YYY-XXX-105-81.static.virginmedia.com       0.0%    46    0.9   1.0   0.9   4.4   0.5
 2. mant-lam-1-s401-0.network.virginmedia.net   0.0%    45    8.1  23.6   7.9 171.5  33.6
 3. manc-t3core-1b-ge-015-0.network.virginmedi 97.7%    45    8.1   8.1   8.1   8.1   0.0
 4. man-bb-a-as0-0.network.virginmedia.net     97.7%    45    8.9   8.9   8.9   8.9   0.0
 5. lee-bb-b-as2-0.network.virginmedia.net     97.7%    45    9.2   9.2   9.2   9.2   0.0
 6. Tengigabitethernet7-1.401ar4.LON3.gblx.net 97.7%    45   22.1  22.1  22.1  22.1   0.0
 7. te9-3-10G.ar6.LON3.gblx.net                97.7%    45   22.0  22.0  22.0  22.0   0.0
 8. VODAFONE-LTD.TenGigabitEthernet7-1.ar6.LON 97.7%    45   30.7  30.7  30.7  30.7   0.0
 9. ???
10. 212.183.134.1                              97.7%    45   35.4  35.4  35.4  35.4   0.0