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Did something change in June on Fios G3100 routers?
tward392
Enthusiast

I had a curl script and a program that sends messages to gmail that includes attachments.  Sometime in June, the curl script started reporting an error:


Trying <ip address>:443...
Connected to api.pushover.net (<ip address>) port 443 (#0)
schannel: disabled automatic use of client certificate
schannel: ALPN, offering http/1.1
schannel: ALPN, server accepted to use http/1.1

POST /1/messages.json HTTP/1.1
Host: api.pushover.net
User-Agent: curl/7.79.1
Accept: /
Content-Length: 80465
Content-Type: multipart/form-data; boundary=------------------------c14a16104b6bac19

schannel: Curl_read_plain returned CURLE_RECV_ERROR
Closing connection 0
schannel: shutting down SSL/TLS connection with api.pushover.net port 443
Send failure: Connection was reset
schannel: failed to send close msg: Failed sending data to the peer (bytes written: -1)

The send via gmail is getting:  Error with Gmail Api; 500 Unknown exception (server no response). (12)

Only seems to happen if I am including the attachment.

I'm grasping at straws here because I don't know what else could have changed to break this.

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1 Solution

Correct answers
Re: Did something change in June on Fios G3100 routers?
tward392
Enthusiast

I disabled IPv6 on the Verizon Router and both gmail attachment and pushover messages started working again.

View solution in original post

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Re: Did something change in June on Fios G3100 routers?
Cang_Household
Super User
Super User

No, however, there was a firmware update a few weeks before June.

If you go to the Firewall logging, do you see any dropped or blocked events?

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Re: Did something change in June on Fios G3100 routers?
tward392
Enthusiast

I see this after I try the curl command to send an attachment:

[FW] IPTABLES [Pkt_Illegal] IN=eth4 OUT= MAC=********

src=**.**.***.** DST=**.**.***.*** LEN=40 TOS=0x00 PREC=0x00 TTL=236 ID=0 DF PROTO=TCP SPT=443 DPT=47642 WINDOW=0 RES=0x00 RST URGP=0 MARK=0x8000000

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Re: Did something change in June on Fios G3100 routers?
Cang_Household
Super User
Super User

That's difficult to troubleshoot.

iptables won't provide more logging than that, unless someone from engineering to SSH into your router to adjust the log level to verbose/debug.

Are you doing IP fragmentation on curl?

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Re: Did something change in June on Fios G3100 routers?
tward392
Enthusiast

Not that I'm aware of.  Like I said, some router configuration change was the last thing I could think of that would cause both curl and the gmail send stop sending attachments.

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Re: Did something change in June on Fios G3100 routers?
tward392
Enthusiast

I was also wondering if maybe this had something to do with IPv6, maybe that got turned on recently?

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Re: Did something change in June on Fios G3100 routers?
tward392
Enthusiast

I disabled IPv6 on the Verizon Router and both gmail attachment and pushover messages started working again.

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