he.net DDNS update failre

What steps will reproduce the problem?
1. Setup DDNS with he.net service
2. Apply changes

What is the expected output? What do you see instead?
Success message expected in log. Getting message "Will retry again in 300 
sec..."

What version of the product are you using? On what operating system?
Asus RT-N65U router with Padavan's custom firmware version 3.0.3.8-088

After updating firmware from 81 to 85 or 88 he.net DDNS service stops working.
On the firmware 81 and earlier it works well.
System log below.
Jan 11 18:47:58 inadyn[653]: Checking for IP# change, connecting to 
checkip.dns.he.net (184.105.242.4:80)
Jan 11 18:47:59 inadyn[653]: Querying DDNS checkip server for my public IP#: 
GET / HTTP/1.0^M Host: checkip.dns.he.net^M User-Agent: inadyn/1.99.12 
troglobit@gmail.com^M ^M
Jan 11 18:47:59 inadyn[653]: Checked my IP, return code: 0
Jan 11 18:47:59 inadyn[653]: IP server response:
Jan 11 18:47:59 inadyn[653]: HTTP/1.1 200 OK^M Date: Sun, 11 Jan 2015 12:47:59 
GMT^M Server: Apache/2.2.22 (Ubuntu)^M Vary: Accept-Encoding^M Content-Length: 
203^M Connection: close^M Content-Type: text/html^M ^M <!DOCTYPE html> <html> 
<head>  <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />  
<title>What is my IP address?</title> </head> <body> Your IP address is : 
nnn.nnn.nnn.nnn</body> </html>
Jan 11 18:47:59 inadyn[653]: Will retry again in 300 sec...
Jan 11 18:50:12 inadyn[653]: FORCED_UPDATE command received, updating now.
Jan 11 18:50:12 inadyn[653]: Checking for IP# change, connecting to 
checkip.dns.he.net (184.105.242.4:80)
Jan 11 18:50:13 inadyn[653]: Querying DDNS checkip server for my public IP#: 
GET / HTTP/1.0^M Host: checkip.dns.he.net^M User-Agent: inadyn/1.99.12 
troglobit@gmail.com^M ^M
Jan 11 18:50:13 inadyn[653]: Checked my IP, return code: 0
Jan 11 18:50:13 inadyn[653]: IP server response:
Jan 11 18:50:13 inadyn[653]: HTTP/1.1 200 OK^M Date: Sun, 11 Jan 2015 12:50:13 
GMT^M Server: Apache/2.2.22 (Ubuntu)^M Vary: Accept-Encoding^M Content-Length: 
203^M Connection: close^M Content-Type: text/html^M ^M <!DOCTYPE html> <html> 
<head>  <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />  
<title>What is my IP address?</title> </head> <body> Your IP address is : 
nnn.nnn.nnn.nnn</body> </html>
Jan 11 18:50:13 inadyn[653]: Will retry again in 300 sec...
Original issue reported on code.google.com by Vitaly.T...@gmail.com on 11 Jan 2015 at 12:54
javitu / rt-n56u

he.net DDNS update failre #1400
