Verbinding valt steeds weg na upgrade snelheid

Beste,

Ik heb sinds mijn upgrade naar 1gig up/down steeds issues met mijn interne netwerk. Zowel op de wifi als bekabeld valt regelmatig de verbinding even weg. Als ik vervolgens in de systemlogs van de modem kijken dan staat deze vol met dit soort errors:

Mar  8 12:50:47 KPN Modem daemon.err miniupnpd[4669]: try_sendto(sock=10, len=455, dest=[ff02::c]:1900): sendto: Cannot assign requested address
Mar  8 12:50:47 KPN Modem daemon.err miniupnpd[4669]: try_sendto(sock=10, len=453, dest=[ff02::c]:1900): sendto: Cannot assign requested address
Mar  8 12:50:47 KPN Modem daemon.err miniupnpd[4669]: try_sendto(sock=10, len=471, dest=[ff02::c]:1900): sendto: Cannot assign requested address
Mar  8 12:50:47 KPN Modem daemon.err miniupnpd[4669]: try_sendto(sock=10, len=400, dest=[ff02::c]:1900): sendto: Cannot assign requested address
Mar  8 12:50:47 KPN Modem daemon.err miniupnpd[4669]: try_sendto(sock=10, len=439, dest=[ff02::c]:1900): sendto: Cannot assign requested address
Mar  8 12:50:47 KPN Modem daemon.err miniupnpd[4669]: try_sendto(sock=10, len=400, dest=[ff02::c]:1900): sendto: Cannot assign requested address
Mar  8 12:50:47 KPN Modem daemon.err miniupnpd[4669]: try_sendto(sock=10, len=459, dest=[ff02::c]:1900): sendto: Cannot assign requested address
Mar  8 12:50:47 KPN Modem daemon.err miniupnpd[4669]: try_sendto(sock=10, len=400, dest=[ff02::c]:1900): sendto: Cannot assign requested address
Mar  8 12:50:47 KPN Modem daemon.err miniupnpd[4669]: try_sendto(sock=10, len=463, dest=[ff02::c]:1900): sendto: Cannot assign requested address
Mar  8 12:50:47 KPN Modem daemon.err miniupnpd[4669]: try_sendto(sock=10, len=391, dest=[ff02::c]:1900): sendto: Cannot assign requested address
Mar  8 12:50:47 KPN Modem daemon.err miniupnpd[4669]: try_sendto failed to send 10 packets
Mar  8 12:50:47 KPN Modem daemon.err miniupnpd[4669]: try_sendto(sock=10, len=439, dest=[ff0e::c]:1900): sendto: Cannot assign requested address

Dit is heel vervelend, vooral in teams sessies omdat deze timeout van 2 tot 3 hops er net voor zorgt dat het gesprek onderbroken wordt.

Reply from 142.250.74.131: bytes=32 time=32ms TTL=113
Reply from 142.250.74.131: bytes=32 time=31ms TTL=113
Request timed out.
Request timed out.
Reply from 142.250.74.131: bytes=32 time=31ms TTL=113
Request timed out.
Reply from 142.250.74.131: bytes=32 time=33ms TTL=113
Reply from 142.250.74.131: bytes=32 time=31ms TTL=113
Reply from 142.250.74.131: bytes=32 time=32ms TTL=113

Wat is hier aan te doen?

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